task_url stringlengths 30 116 | task_name stringlengths 2 86 | task_description stringlengths 0 14.4k | language_url stringlengths 2 53 | language_name stringlengths 1 52 | code stringlengths 0 61.9k |
|---|---|---|---|---|---|
http://rosettacode.org/wiki/CRC-32 | CRC-32 |
Task
Demonstrate a method of deriving the Cyclic Redundancy Check from within the language.
The result should be in accordance with ISO 3309, ITU-T V.42, Gzip and PNG.
Algorithms are described on Computation of CRC in Wikipedia.
This variant of CRC-32 uses LSB-first order, sets the initial CRC to FFFFFFFF16, and... | #Wren | Wren | import "/fmt" for Conv
class CRC32 {
static init() {
__table = List.filled(256, 0)
for (i in 0..255) {
var word = i
for (j in 0..7) {
if (word&1 == 1) {
word = (word >> 1) ^ 0xedb88320
} else {
word = w... |
http://rosettacode.org/wiki/Count_the_coins | Count the coins | There are four types of common coins in US currency:
quarters (25 cents)
dimes (10 cents)
nickels (5 cents), and
pennies (1 cent)
There are six ways to make change for 15 cents:
A dime and a nickel
A dime and 5 pennies
3 nickels
2 nickels and 5 pennies
A nickel and 10 pen... | #OCaml | OCaml | let changes amount coins =
let ways = Array.make (amount + 1) 0L in
ways.(0) <- 1L;
List.iter (fun coin ->
for j = coin to amount do
ways.(j) <- Int64.add ways.(j) ways.(j - coin)
done
) coins;
ways.(amount)
let () =
Printf.printf "%Ld\n" (changes 1_00 [25; 10; 5; 1]);
Printf.printf "%L... |
http://rosettacode.org/wiki/Count_occurrences_of_a_substring | Count occurrences of a substring | Task
Create a function, or show a built-in function, to count the number of non-overlapping occurrences of a substring inside a string.
The function should take two arguments:
the first argument being the string to search, and
the second a substring to be searched for.
It should return an integer cou... | #Liberty_BASIC | Liberty BASIC |
print countSubstring( "the three truths", "th")
print countSubstring( "ababababab", "abab")
end
function countSubstring( a$, s$)
c =0
la =len( a$)
ls =len( s$)
for i =1 to la -ls
if mid$( a$, i, ls) =s$ then c =c +1: i =i +ls -1
next i
countSubstring =c
end function
|
http://rosettacode.org/wiki/Count_occurrences_of_a_substring | Count occurrences of a substring | Task
Create a function, or show a built-in function, to count the number of non-overlapping occurrences of a substring inside a string.
The function should take two arguments:
the first argument being the string to search, and
the second a substring to be searched for.
It should return an integer cou... | #Logtalk | Logtalk |
:- object(counting).
:- public(count/3).
count(String, SubString, Count) :-
count(String, SubString, 0, Count).
count(String, SubString, Count0, Count) :-
( sub_atom(String, Before, Length, After, SubString) ->
Count1 is Count0 + 1,
Start is Before + Length,... |
http://rosettacode.org/wiki/Count_in_octal | Count in octal | Task
Produce a sequential count in octal, starting at zero, and using an increment of a one for each consecutive number.
Each number should appear on a single line, and the program should count until terminated, or until the maximum value of the numeric type in use is reached.
Related task
Integer sequ... | #LOLCODE | LOLCODE | HAI 1.3
HOW IZ I octal YR num
I HAS A digit, I HAS A oct ITZ ""
IM IN YR octalizer
digit R MOD OF num AN 8
oct R SMOOSH digit oct MKAY
num R QUOSHUNT OF num AN 8
NOT num, O RLY?
YA RLY, FOUND YR oct
OIC
IM OUTTA YR octalizer
IF U SAY SO
IM IN YR printe... |
http://rosettacode.org/wiki/Count_in_octal | Count in octal | Task
Produce a sequential count in octal, starting at zero, and using an increment of a one for each consecutive number.
Each number should appear on a single line, and the program should count until terminated, or until the maximum value of the numeric type in use is reached.
Related task
Integer sequ... | #Lua | Lua | for l=1,2147483647 do
print(string.format("%o",l))
end |
http://rosettacode.org/wiki/Count_in_factors | Count in factors | Task
Write a program which counts up from 1, displaying each number as the multiplication of its prime factors.
For the purpose of this task, 1 (unity) may be shown as itself.
Example
2 is prime, so it would be shown as itself.
6 is not prime; it would be shown as
2
×
3
{\di... | #JavaScript | JavaScript | for(i = 1; i <= 10; i++)
console.log(i + " : " + factor(i).join(" x "));
function factor(n) {
var factors = [];
if (n == 1) return [1];
for(p = 2; p <= n; ) {
if((n % p) == 0) {
factors[factors.length] = p;
n /= p;
}
else p++;
}
return factors;
} |
http://rosettacode.org/wiki/Create_an_HTML_table | Create an HTML table | Create an HTML table.
The table body should have at least three rows of three columns.
Each of these three columns should be labelled "X", "Y", and "Z".
An extra column should be added at either the extreme left or the extreme right of the table that has no heading, but is filled with sequential row numbers.
The... | #JavaScript | JavaScript | <html><head><title>Table maker</title><script type="application/javascript">
// normally, don't do this: at least name it something other than "a"
Node.prototype.a = function (e) { this.appendChild(e); return this }
function ce(tag, txt) {
var x = document.createElement(tag);
x.textContent = (txt === undefined) ?... |
http://rosettacode.org/wiki/Date_format | Date format | This task has been clarified. Its programming examples are in need of review to ensure that they still fit the requirements of the task.
Task
Display the current date in the formats of:
2007-11-23 and
Friday, November 23, 2007
| #Ursa | Ursa | cygnus/x ursa v0.78 (default, release 0)
[Oracle Corporation JVM 1.8.0_51 on Mac OS X 10.10.5 x86_64]
> import "java.util.Date"
> import "java.text.SimpleDateFormat"
> decl java.text.SimpleDateFormat sdf
> sdf.applyPattern "yyyy-MM-dd"
> decl java.util.Date d
> out (sdf.format d) endl console
2016-07-23
> sdf.applyPatt... |
http://rosettacode.org/wiki/Date_format | Date format | This task has been clarified. Its programming examples are in need of review to ensure that they still fit the requirements of the task.
Task
Display the current date in the formats of:
2007-11-23 and
Friday, November 23, 2007
| #Ursala | Ursala | #import std
#import cli
months = ~&p/block3'JanFebMarAprMayJunJulAugSepOctNovDec' block2'010203040506070809101112'
completion =
-:~& ~&pllrTXS/block3'SunMonTueWedThuFriSat'--(~&lS months) -- (
--','* sep`, 'day,day,sday,nesday,rsday,day,urday',
sep`, 'uary,ruary,ch,il,,e,y,ust,tember,ober,ember,ember')
te... |
http://rosettacode.org/wiki/Create_a_file | Create a file | In this task, the job is to create a new empty file called "output.txt" of size 0 bytes
and an empty directory called "docs". This should be done twice: once "here", i.e. in the current working directory and once in the filesystem root.
| #MATLAB_.2F_Octave | MATLAB / Octave | fid = fopen('output.txt','w'); fclose(fid);
fid = fopen('/output.txt','w'); fclose(fid);
mkdir('docs');
mkdir('/docs'); |
http://rosettacode.org/wiki/Create_a_file | Create a file | In this task, the job is to create a new empty file called "output.txt" of size 0 bytes
and an empty directory called "docs". This should be done twice: once "here", i.e. in the current working directory and once in the filesystem root.
| #Maxima | Maxima | f: openw("/output.txt");
close(f);
f: openw("output.txt");
close(f);
/* Maxima has no function to create directories, but one can use the underlying Lisp system */
:lisp (mapcar #'ensure-directories-exist '("docs/" "/docs/")) |
http://rosettacode.org/wiki/CSV_to_HTML_translation | CSV to HTML translation | Consider a simplified CSV format where all rows are separated by a newline
and all columns are separated by commas.
No commas are allowed as field data, but the data may contain
other characters and character sequences that would
normally be escaped when converted to HTML
Task
Create a function that takes a st... | #Mathematica_.2F_Wolfram_Language | Mathematica / Wolfram Language | a="Character,Speech
The multitude,The messiah! Show us the messiah!
Brians mother,<angry>Now you listen here! He's not the messiah;he's a very naughty boy! Now go away!</angry>
The multitude,Who are you?
Brians mother,I'm his mother;that's who!
The multitude,Behold his mother! Behold his mother!";
(*Naive*)
StringJoin[... |
http://rosettacode.org/wiki/CSV_data_manipulation | CSV data manipulation | CSV spreadsheet files are suitable for storing tabular data in a relatively portable way.
The CSV format is flexible but somewhat ill-defined.
For present purposes, authors may assume that the data fields contain no commas, backslashes, or quotation marks.
Task
Read a CSV file, change some values and save the cha... | #Seed7 | Seed7 | $ include "seed7_05.s7i";
const proc: main is func
local
var file: input is STD_NULL;
var array array string: csvData is 0 times 0 times "";
var integer: line is 0;
begin
input := open(dir(PROGRAM) & "/csvDataManipulation.in", "r");
while hasNext(input) do
csvData &:= split(getln(input),... |
http://rosettacode.org/wiki/CSV_data_manipulation | CSV data manipulation | CSV spreadsheet files are suitable for storing tabular data in a relatively portable way.
The CSV format is flexible but somewhat ill-defined.
For present purposes, authors may assume that the data fields contain no commas, backslashes, or quotation marks.
Task
Read a CSV file, change some values and save the cha... | #SenseTalk | SenseTalk |
// For test purposes, start by creating (or re-creating) the data file
put {{
C1,C2,C3,C4,C5
1,5,9,13,17
2,6,10,14,18
3,7,11,15,19
4,8,12,16,20
}} into file "myData.csv"
// Read the file as a list of lists (rather than as the default list of property lists)
put CSVValue(file "myData.csv", asLists:Yes) into csvData
... |
http://rosettacode.org/wiki/Day_of_the_week | Day of the week | A company decides that whenever Xmas falls on a Sunday they will give their workers all extra paid holidays so that, together with any public holidays, workers will not have to work the following week (between the 25th of December and the first of January).
Task
In what years between 2008 and 2121 will the 25th of ... | #VBA | VBA | Option Explicit
Sub MainDayOfTheWeek()
Debug.Print "Xmas will be a Sunday in : " & XmasSunday(2008, 2121)
End Sub
Private Function XmasSunday(firstYear As Integer, lastYear As Integer) As String
Dim i As Integer, temp$
For i = firstYear To lastYear
If Weekday(CDate("25/12/" & i)) = vbSunday Then tem... |
http://rosettacode.org/wiki/Day_of_the_week | Day of the week | A company decides that whenever Xmas falls on a Sunday they will give their workers all extra paid holidays so that, together with any public holidays, workers will not have to work the following week (between the 25th of December and the first of January).
Task
In what years between 2008 and 2121 will the 25th of ... | #VBScript | VBScript | For year = 2008 To 2121
If Weekday(DateSerial(year, 12, 25)) = 1 Then
WScript.Echo year
End If
Next |
http://rosettacode.org/wiki/Create_a_two-dimensional_array_at_runtime | Create a two-dimensional array at runtime |
Data Structure
This illustrates a data structure, a means of storing data within a program.
You may see other such structures in the Data Structures category.
Get two integers from the user, then create a two-dimensional array where the two dimensions have the sizes given by those numbers, and which can be accessed ... | #Perl | Perl | sub make_array($ $){
# get array sizes from provided params, but force numeric value
my $x = ($_[0] =~ /^\d+$/) ? shift : 0;
my $y = ($_[0] =~ /^\d+$/) ? shift : 0;
# define array, then add multi-dimensional elements
my @array;
$array[0][0] = 'X '; # first by first element
$array[5][7] = 'X ' if (5 <= $... |
http://rosettacode.org/wiki/Cumulative_standard_deviation | Cumulative standard deviation | Task[edit]
Write a stateful function, class, generator or co-routine that takes a series of floating point numbers, one at a time, and returns the running standard deviation of the series.
The task implementation should use the most natural programming style of those listed for the function in the implementation langu... | #Pascal | Pascal | program stddev;
uses math;
const
n=8;
var
arr: array[1..n] of real =(2,4,4,4,5,5,7,9);
function stddev(n: integer): real;
var
i: integer;
s1,s2,variance,x: real;
begin
for i:=1 to n do
begin
x:=arr[i];
s1:=s1+power(x,2);
s2:=s2+x
end;
variance:=((n*s1)-(power(s2,2)))/(power(n... |
http://rosettacode.org/wiki/CRC-32 | CRC-32 |
Task
Demonstrate a method of deriving the Cyclic Redundancy Check from within the language.
The result should be in accordance with ISO 3309, ITU-T V.42, Gzip and PNG.
Algorithms are described on Computation of CRC in Wikipedia.
This variant of CRC-32 uses LSB-first order, sets the initial CRC to FFFFFFFF16, and... | #XPL0 | XPL0 | code HexOut=27; \intrinsic routine
string 0; \use zero-terminated strings
func CRC32(Str, Len); \Return CRC-32 for given string
char Str; int Len; \byte array, number of bytes
int I, J, R, C;
[R:= -1; \initialize with all 1's
for J:= 0 to Len-1 do
[C:= Str(J);
for ... |
http://rosettacode.org/wiki/CRC-32 | CRC-32 |
Task
Demonstrate a method of deriving the Cyclic Redundancy Check from within the language.
The result should be in accordance with ISO 3309, ITU-T V.42, Gzip and PNG.
Algorithms are described on Computation of CRC in Wikipedia.
This variant of CRC-32 uses LSB-first order, sets the initial CRC to FFFFFFFF16, and... | #zkl | zkl | var [const] ZLib=Import("zeelib");
ZLib.calcCRC32(Data(Void,"The quick brown fox jumps over the lazy dog"));
//-->0x414fa339 |
http://rosettacode.org/wiki/Count_the_coins | Count the coins | There are four types of common coins in US currency:
quarters (25 cents)
dimes (10 cents)
nickels (5 cents), and
pennies (1 cent)
There are six ways to make change for 15 cents:
A dime and a nickel
A dime and 5 pennies
3 nickels
2 nickels and 5 pennies
A nickel and 10 pen... | #PARI.2FGP | PARI/GP | coins(v)=prod(i=1,#v,1/(1-'x^v[i]));
ways(v,n)=polcoeff(coins(v)+O('x^(n+1)),n);
ways([1,5,10,25],100)
ways([1,5,10,25,50,100],100000) |
http://rosettacode.org/wiki/Count_the_coins | Count the coins | There are four types of common coins in US currency:
quarters (25 cents)
dimes (10 cents)
nickels (5 cents), and
pennies (1 cent)
There are six ways to make change for 15 cents:
A dime and a nickel
A dime and 5 pennies
3 nickels
2 nickels and 5 pennies
A nickel and 10 pen... | #Perl | Perl | use 5.01;
use Memoize;
sub cc {
my $amount = shift;
return 0 if !@_ || $amount < 0;
return 1 if $amount == 0;
my $first = shift;
cc( $amount, @_ ) + cc( $amount - $first, $first, @_ );
}
memoize 'cc';
# Make recursive algorithm run faster by sorting coins descending by value:
sub cc_optimized {
... |
http://rosettacode.org/wiki/Count_occurrences_of_a_substring | Count occurrences of a substring | Task
Create a function, or show a built-in function, to count the number of non-overlapping occurrences of a substring inside a string.
The function should take two arguments:
the first argument being the string to search, and
the second a substring to be searched for.
It should return an integer cou... | #Lua | Lua | function countSubstring(s1, s2)
return select(2, s1:gsub(s2, ""))
end
print(countSubstring("the three truths", "th"))
print(countSubstring("ababababab", "abab")) |
http://rosettacode.org/wiki/Count_occurrences_of_a_substring | Count occurrences of a substring | Task
Create a function, or show a built-in function, to count the number of non-overlapping occurrences of a substring inside a string.
The function should take two arguments:
the first argument being the string to search, and
the second a substring to be searched for.
It should return an integer cou... | #Maple | Maple |
f:=proc(s::string,c::string,count::nonnegint) local n;
n:=StringTools:-Search(c,s);
if n>0 then 1+procname(s[n+length(c)..],c,count);
else 0; end if;
end proc:
f("the three truths","th",0);
f("ababababab","abab",0);
|
http://rosettacode.org/wiki/Count_in_octal | Count in octal | Task
Produce a sequential count in octal, starting at zero, and using an increment of a one for each consecutive number.
Each number should appear on a single line, and the program should count until terminated, or until the maximum value of the numeric type in use is reached.
Related task
Integer sequ... | #M4 | M4 | define(`forever',
`ifelse($#,0,``$0'',
`pushdef(`$1',$2)$4`'popdef(`$1')$0(`$1',eval($2+$3),$3,`$4')')')dnl
forever(`y',0,1, `eval(y,8)
') |
http://rosettacode.org/wiki/Count_in_octal | Count in octal | Task
Produce a sequential count in octal, starting at zero, and using an increment of a one for each consecutive number.
Each number should appear on a single line, and the program should count until terminated, or until the maximum value of the numeric type in use is reached.
Related task
Integer sequ... | #Maple | Maple |
octcount := proc (n)
seq(printf("%a \n", convert(i, octal)), i = 1 .. n);
end proc;
|
http://rosettacode.org/wiki/Count_in_octal | Count in octal | Task
Produce a sequential count in octal, starting at zero, and using an increment of a one for each consecutive number.
Each number should appear on a single line, and the program should count until terminated, or until the maximum value of the numeric type in use is reached.
Related task
Integer sequ... | #MACRO-10 | MACRO-10 |
title OCTAL - Count in octal.
subttl PDP-10 assembly (MACRO-10 on TOPS-20). KJX 2022.
search monsym,macsym
comment \
If you want to see the overflow happening without waiting for
too long, change "movei b,1" to "move b,[377777,,777770]".
\
a=:1 ;... |
http://rosettacode.org/wiki/Count_in_factors | Count in factors | Task
Write a program which counts up from 1, displaying each number as the multiplication of its prime factors.
For the purpose of this task, 1 (unity) may be shown as itself.
Example
2 is prime, so it would be shown as itself.
6 is not prime; it would be shown as
2
×
3
{\di... | #jq | jq | # To take advantage of gojq's arbitrary-precision integer arithmetic:
def power($b): . as $in | reduce range(0;$b) as $i (1; . * $in);
# Input: a non-negative integer determining when to stop
def count_in_factors:
"1: 1",
(range(2;.) | "\(.): \([factors] | join("x"))");
def count_in_factors($m;$n):
if . == 1... |
http://rosettacode.org/wiki/Count_in_factors | Count in factors | Task
Write a program which counts up from 1, displaying each number as the multiplication of its prime factors.
For the purpose of this task, 1 (unity) may be shown as itself.
Example
2 is prime, so it would be shown as itself.
6 is not prime; it would be shown as
2
×
3
{\di... | #Julia | Julia | using Primes, Printf
function strfactor(n::Integer)
n > -2 || return "-1 × " * strfactor(-n)
isprime(n) || n < 2 && return dec(n)
f = factor(Vector{typeof(n)}, n)
return join(f, " × ")
end
lo, hi = -4, 40
println("Factor print $lo to $hi:")
for n in lo:hi
@printf("%5d = %s\n", n, strfactor(n))
end |
http://rosettacode.org/wiki/Create_an_HTML_table | Create an HTML table | Create an HTML table.
The table body should have at least three rows of three columns.
Each of these three columns should be labelled "X", "Y", and "Z".
An extra column should be added at either the extreme left or the extreme right of the table that has no heading, but is filled with sequential row numbers.
The... | #jq | jq | def html_row:
"<tr>",
" \(.[] | "<td>\(.)</td>")",
"</tr>";
def html_header:
"<thead align = 'right'>",
" \(html_row)",
"</thead>";
def html_table(header):
"<table>",
" \(header | html_header)",
" <tbody align = 'right'>",
" \(.[] | html_row)",
" </tbody",
"</table>";
# Prepend th... |
http://rosettacode.org/wiki/Date_format | Date format | This task has been clarified. Its programming examples are in need of review to ensure that they still fit the requirements of the task.
Task
Display the current date in the formats of:
2007-11-23 and
Friday, November 23, 2007
| #VB-DOS | VB-DOS |
OPTION EXPLICIT
' Months
DATA "January", "February", "March", "April", "May", "June", "July"
DATA "August", "September", "October", "November", "December"
' Days of week
DATA "Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday"
' Var
DIM dDate AS DOUBLE, sMonth(1 TO 12) AS STRING, sDay(1... |
http://rosettacode.org/wiki/Date_format | Date format | This task has been clarified. Its programming examples are in need of review to ensure that they still fit the requirements of the task.
Task
Display the current date in the formats of:
2007-11-23 and
Friday, November 23, 2007
| #VBA | VBA | Function DateFormats()
Debug.Print Format(Date, "yyyy-mm-dd")
Debug.Print Format(Date, "dddd, mmmm dd yyyy")
End Function |
http://rosettacode.org/wiki/Create_a_file | Create a file | In this task, the job is to create a new empty file called "output.txt" of size 0 bytes
and an empty directory called "docs". This should be done twice: once "here", i.e. in the current working directory and once in the filesystem root.
| #MAXScript | MAXScript | -- Here
f = createFile "output.txt"
close f
makeDir (sysInfo.currentDir + "\docs")
-- System root
f = createFile "\output.txt"
close f
makeDir ("c:\docs") |
http://rosettacode.org/wiki/Create_a_file | Create a file | In this task, the job is to create a new empty file called "output.txt" of size 0 bytes
and an empty directory called "docs". This should be done twice: once "here", i.e. in the current working directory and once in the filesystem root.
| #Mercury | Mercury | :- module create_file.
:- interface.
:- import_module io.
:- pred main(io::di, io::uo) is det.
:- implementation.
:- import_module dir.
main(!IO) :-
create_file("output.txt", !IO),
create_file("/output.txt", !IO),
create_dir("docs", !IO),
create_dir("/docs", !IO).
:- pred create_file(string::i... |
http://rosettacode.org/wiki/CSV_to_HTML_translation | CSV to HTML translation | Consider a simplified CSV format where all rows are separated by a newline
and all columns are separated by commas.
No commas are allowed as field data, but the data may contain
other characters and character sequences that would
normally be escaped when converted to HTML
Task
Create a function that takes a st... | #MATLAB | MATLAB |
inputString = fileread(csvFileName);
% using multiple regular expressions to clear up special chars
htmlFriendly = regexprep(regexprep(regexprep(regexprep(inputString,...
'&','&'),...
'"','"'),...
'<','<'),...
'>','>');
% split string into cell array
tableValues = regexp(r... |
http://rosettacode.org/wiki/CSV_data_manipulation | CSV data manipulation | CSV spreadsheet files are suitable for storing tabular data in a relatively portable way.
The CSV format is flexible but somewhat ill-defined.
For present purposes, authors may assume that the data fields contain no commas, backslashes, or quotation marks.
Task
Read a CSV file, change some values and save the cha... | #Sidef | Sidef | # Read
var csvfile = %f'data.csv';
var fh = csvfile.open_r;
var header = fh.line.trim_end.split(',');
var csv = fh.lines.map { .trim_end.split(',').map{.to_num} };
fh.close;
# Write
var out = csvfile.open_w;
out.say([header..., 'SUM'].join(','));
csv.each { |row| out.say([row..., row.sum].join(',')) };
out.close; |
http://rosettacode.org/wiki/CSV_data_manipulation | CSV data manipulation | CSV spreadsheet files are suitable for storing tabular data in a relatively portable way.
The CSV format is flexible but somewhat ill-defined.
For present purposes, authors may assume that the data fields contain no commas, backslashes, or quotation marks.
Task
Read a CSV file, change some values and save the cha... | #Stata | Stata | import delim input.csv, clear
replace c5=c3+c4
egen sum=rowtotal(c*)
drop if mod(c3,3)==0
export delim output.csv, replace |
http://rosettacode.org/wiki/Day_of_the_week | Day of the week | A company decides that whenever Xmas falls on a Sunday they will give their workers all extra paid holidays so that, together with any public holidays, workers will not have to work the following week (between the 25th of December and the first of January).
Task
In what years between 2008 and 2121 will the 25th of ... | #Vedit_macro_language | Vedit macro language | Buf_Switch(Buf_Free)
for (#3 = 2008; #3 < 2122; #3++) {
Reg_Set(10, "12/25/")
Num_Str(#3, 10, LEFT+APPEND)
if (JDate(@10) % 7 == 0) {
Num_Ins(#3, NOCR)
}
} |
http://rosettacode.org/wiki/Day_of_the_week | Day of the week | A company decides that whenever Xmas falls on a Sunday they will give their workers all extra paid holidays so that, together with any public holidays, workers will not have to work the following week (between the 25th of December and the first of January).
Task
In what years between 2008 and 2121 will the 25th of ... | #Visual_Objects | Visual Objects |
local i as dword
for i := 2008 upto 2121
if DOW(ConDate(i, 12, 25)) = 1
? AsString(i)
endif
next i
|
http://rosettacode.org/wiki/Create_a_two-dimensional_array_at_runtime | Create a two-dimensional array at runtime |
Data Structure
This illustrates a data structure, a means of storing data within a program.
You may see other such structures in the Data Structures category.
Get two integers from the user, then create a two-dimensional array where the two dimensions have the sizes given by those numbers, and which can be accessed ... | #Phix | Phix | -- demo\rosetta\Create2Darray.exw
with javascript_semantics -- (layout/spacing leaves a little to be desired...)
include pGUI.e
Ihandle lab, tab, res, dlg
function valuechanged_cb(Ihandle tab)
string s = IupGetAttribute(tab,"VALUE")
sequence r = scanf(s,"%d %d")
if length(r)=1 then
integer {height,... |
http://rosettacode.org/wiki/Cumulative_standard_deviation | Cumulative standard deviation | Task[edit]
Write a stateful function, class, generator or co-routine that takes a series of floating point numbers, one at a time, and returns the running standard deviation of the series.
The task implementation should use the most natural programming style of those listed for the function in the implementation langu... | #Perl | Perl | {
package SDAccum;
sub new {
my $class = shift;
my $self = {};
$self->{sum} = 0.0;
$self->{sum2} = 0.0;
$self->{num} = 0;
bless $self, $class;
return $self;
}
sub count {
my $self = shift;
return $self->{num};
}
sub mean {
my $self = shift;
return ($self->{num}>0) ? $self->{sum}/$sel... |
http://rosettacode.org/wiki/Count_the_coins | Count the coins | There are four types of common coins in US currency:
quarters (25 cents)
dimes (10 cents)
nickels (5 cents), and
pennies (1 cent)
There are six ways to make change for 15 cents:
A dime and a nickel
A dime and 5 pennies
3 nickels
2 nickels and 5 pennies
A nickel and 10 pen... | #Phix | Phix | function coin_count(sequence coins, integer amount)
sequence s = repeat(0,amount+1)
s[1] = 1
for c=1 to length(coins) do
for n=coins[c] to amount do
s[n+1] += s[n-coins[c]+1]
end for
end for
return s[amount+1]
end function
|
http://rosettacode.org/wiki/Count_occurrences_of_a_substring | Count occurrences of a substring | Task
Create a function, or show a built-in function, to count the number of non-overlapping occurrences of a substring inside a string.
The function should take two arguments:
the first argument being the string to search, and
the second a substring to be searched for.
It should return an integer cou... | #Mathematica_.2F_Wolfram_Language | Mathematica / Wolfram Language | StringPosition["the three truths","th",Overlaps->False]//Length
3
StringPosition["ababababab","abab",Overlaps->False]//Length
2 |
http://rosettacode.org/wiki/Count_occurrences_of_a_substring | Count occurrences of a substring | Task
Create a function, or show a built-in function, to count the number of non-overlapping occurrences of a substring inside a string.
The function should take two arguments:
the first argument being the string to search, and
the second a substring to be searched for.
It should return an integer cou... | #MATLAB_.2F_Octave | MATLAB / Octave | % Count occurrences of a substring without overlap
length(findstr("ababababab","abab",0))
length(findstr("the three truths","th",0))
% Count occurrences of a substring with overlap
length(findstr("ababababab","abab",1)) |
http://rosettacode.org/wiki/Count_in_octal | Count in octal | Task
Produce a sequential count in octal, starting at zero, and using an increment of a one for each consecutive number.
Each number should appear on a single line, and the program should count until terminated, or until the maximum value of the numeric type in use is reached.
Related task
Integer sequ... | #Mathematica.2FWolfram_Language | Mathematica/Wolfram Language | x=0;
While[True,Print[BaseForm[x,8];x++] |
http://rosettacode.org/wiki/Count_in_octal | Count in octal | Task
Produce a sequential count in octal, starting at zero, and using an increment of a one for each consecutive number.
Each number should appear on a single line, and the program should count until terminated, or until the maximum value of the numeric type in use is reached.
Related task
Integer sequ... | #MATLAB_.2F_Octave | MATLAB / Octave | n = 0;
while (1)
dec2base(n,8)
n = n+1;
end; |
http://rosettacode.org/wiki/Count_in_octal | Count in octal | Task
Produce a sequential count in octal, starting at zero, and using an increment of a one for each consecutive number.
Each number should appear on a single line, and the program should count until terminated, or until the maximum value of the numeric type in use is reached.
Related task
Integer sequ... | #Mercury | Mercury |
:- module count_in_octal.
:- interface.
:- import_module io.
:- pred main(io::di, io::uo) is det.
:- implementation.
:- import_module int, list, string.
main(!IO) :-
count_in_octal(0, !IO).
:- pred count_in_octal(int::in, io::di, io::uo) is det.
count_in_octal(N, !IO) :-
io.format("%o\n", [i(N)], !I... |
http://rosettacode.org/wiki/Count_in_factors | Count in factors | Task
Write a program which counts up from 1, displaying each number as the multiplication of its prime factors.
For the purpose of this task, 1 (unity) may be shown as itself.
Example
2 is prime, so it would be shown as itself.
6 is not prime; it would be shown as
2
×
3
{\di... | #Kotlin | Kotlin | // version 1.1.2
fun isPrime(n: Int) : Boolean {
if (n < 2) return false
if (n % 2 == 0) return n == 2
if (n % 3 == 0) return n == 3
var d = 5
while (d * d <= n) {
if (n % d == 0) return false
d += 2
if (n % d == 0) return false
d += 4
}
return true
}
fun ... |
http://rosettacode.org/wiki/Create_an_HTML_table | Create an HTML table | Create an HTML table.
The table body should have at least three rows of three columns.
Each of these three columns should be labelled "X", "Y", and "Z".
An extra column should be added at either the extreme left or the extreme right of the table that has no heading, but is filled with sequential row numbers.
The... | #Julia | Julia | function tag(x::Pair, attr::Pair...)
t, b = x
attrstr = join(" $n=\"$p\"" for (n, p) in attr)
return "<$t$attrstr>$b</$t>"
end
colnames = split(",X,Y,Z", ',')
header = join(tag(:th => txt) for txt in colnames) * "\n"
rows = collect(tag(:tr => join(tag(:td => i, :style => "font-weight: bold;") * join(t... |
http://rosettacode.org/wiki/Date_format | Date format | This task has been clarified. Its programming examples are in need of review to ensure that they still fit the requirements of the task.
Task
Display the current date in the formats of:
2007-11-23 and
Friday, November 23, 2007
| #VBScript | VBScript |
'YYYY-MM-DD format
WScript.StdOut.WriteLine Year(Date) & "-" & Right("0" & Month(Date),2) & "-" & Right("0" & Day(Date),2)
'Weekday_Name, Month_Name DD, YYYY format
WScript.StdOut.WriteLine FormatDateTime(Now,1)
|
http://rosettacode.org/wiki/Date_format | Date format | This task has been clarified. Its programming examples are in need of review to ensure that they still fit the requirements of the task.
Task
Display the current date in the formats of:
2007-11-23 and
Friday, November 23, 2007
| #Vedit_macro_language | Vedit macro language | Date(REVERSE+NOMSG+VALUE, '-') |
http://rosettacode.org/wiki/Create_a_file | Create a file | In this task, the job is to create a new empty file called "output.txt" of size 0 bytes
and an empty directory called "docs". This should be done twice: once "here", i.e. in the current working directory and once in the filesystem root.
| #Mirah | Mirah | import java.io.File
File.new('output.txt').createNewFile()
File.new('docs').mkdir()
File.new("docs#{File.separator}output.txt").createNewFile()
|
http://rosettacode.org/wiki/Create_a_file | Create a file | In this task, the job is to create a new empty file called "output.txt" of size 0 bytes
and an empty directory called "docs". This should be done twice: once "here", i.e. in the current working directory and once in the filesystem root.
| #Modula-3 | Modula-3 | MODULE FileCreation EXPORTS Main;
IMPORT FS, File, OSError, IO, Stdio;
VAR file: File.T;
BEGIN
TRY
file := FS.OpenFile("output.txt");
file.close();
FS.CreateDirectory("docs");
file := FS.OpenFile("/output.txt");
file.close();
FS.CreateDirectory("/docs");
EXCEPT
| OSError.E => IO.Put(... |
http://rosettacode.org/wiki/CSV_to_HTML_translation | CSV to HTML translation | Consider a simplified CSV format where all rows are separated by a newline
and all columns are separated by commas.
No commas are allowed as field data, but the data may contain
other characters and character sequences that would
normally be escaped when converted to HTML
Task
Create a function that takes a st... | #Maxima | Maxima | infile: "input.csv";
outfile: "table.html";
instream: openr(infile);
outstream: openw(outfile);
printf(outstream, "<TABLE border=\"1\">~%");
nr: 0;
while (line: readline(instream))#false do (
nr: nr + 1,
line: ssubst("<", "<", line),
line: ssubst(">", ">", line),
value_list: map(lambda([f], strim(" ", f... |
http://rosettacode.org/wiki/CSV_data_manipulation | CSV data manipulation | CSV spreadsheet files are suitable for storing tabular data in a relatively portable way.
The CSV format is flexible but somewhat ill-defined.
For present purposes, authors may assume that the data fields contain no commas, backslashes, or quotation marks.
Task
Read a CSV file, change some values and save the cha... | #Tcl | Tcl | package require struct::matrix
package require csv
proc addSumColumn {filename {title "SUM"}} {
set m [struct::matrix]
# Load the CSV in
set f [open $filename]
csv::read2matrix $f $m "," auto
close $f
# Add the column with the sums
set sumcol [$m columns]
$m add column $title
f... |
http://rosettacode.org/wiki/Day_of_the_week | Day of the week | A company decides that whenever Xmas falls on a Sunday they will give their workers all extra paid holidays so that, together with any public holidays, workers will not have to work the following week (between the 25th of December and the first of January).
Task
In what years between 2008 and 2121 will the 25th of ... | #Vlang | Vlang | import time
fn main() {
for year := 2008; year <= 2121; year++ {
date := time.parse('${year}-12-25 00:00:00') or { continue }
if date.long_weekday_str() == 'Sunday' {
println('December 25 ${year} is a ${date.long_weekday_str()}')
}
}
} |
http://rosettacode.org/wiki/Day_of_the_week | Day of the week | A company decides that whenever Xmas falls on a Sunday they will give their workers all extra paid holidays so that, together with any public holidays, workers will not have to work the following week (between the 25th of December and the first of January).
Task
In what years between 2008 and 2121 will the 25th of ... | #VTL-2 | VTL-2 | 1000 #=2000
1010 R=!
1020 N=M
1030 X=Y
1040 #=N>3*1070
1050 N=N+12
1060 X=X-1
1070 J=X/100
1080 K=%
1090 W=N+1*26/10+D+K+(K/4)+(J/4)+(5*J)/7*0+%
1100 #=R
2000 ?="25th of December is a Sunday in";
2010 Y=2008
2020 M=12
2030 D=25
2040 #=1010
2050 #=W=1=0*2080
2060 $=32
2070 ?=Y
2080 Y=Y+1
2090 #=Y<2121*2040
2100 ?="" |
http://rosettacode.org/wiki/Create_a_two-dimensional_array_at_runtime | Create a two-dimensional array at runtime |
Data Structure
This illustrates a data structure, a means of storing data within a program.
You may see other such structures in the Data Structures category.
Get two integers from the user, then create a two-dimensional array where the two dimensions have the sizes given by those numbers, and which can be accessed ... | #Phixmonti | Phixmonti | include ..\Utilitys.pmt
"Enter height: " input tonum nl
"Enter width: " input tonum nl
0 swap repeat swap repeat /# create two dimensional array/list. All zeroes #/
-1 get 99 -1 set -1 set /# set the last element o last dimension #/
pstack /# show the content of the stack #/
-1 ... |
http://rosettacode.org/wiki/Create_a_two-dimensional_array_at_runtime | Create a two-dimensional array at runtime |
Data Structure
This illustrates a data structure, a means of storing data within a program.
You may see other such structures in the Data Structures category.
Get two integers from the user, then create a two-dimensional array where the two dimensions have the sizes given by those numbers, and which can be accessed ... | #Picat | Picat | import util.
go =>
print("Input the number of rows and columns: "),
[Rows,Cols]=split(read_line()).map(to_int),
X=new_array(Rows,Cols),
X[1,1] = Rows*Cols+1,
println(X[1,1]). |
http://rosettacode.org/wiki/Cumulative_standard_deviation | Cumulative standard deviation | Task[edit]
Write a stateful function, class, generator or co-routine that takes a series of floating point numbers, one at a time, and returns the running standard deviation of the series.
The task implementation should use the most natural programming style of those listed for the function in the implementation langu... | #Phix | Phix | with javascript_semantics
atom sdn = 0, sdsum = 0, sdsumsq = 0
procedure sdadd(atom n)
sdn += 1
sdsum += n
sdsumsq += n*n
end procedure
function sdavg()
return sdsum/sdn
end function
function sddev()
return sqrt(sdsumsq/sdn - power(sdsum/sdn,2))
end function
--test code:
constant testset = ... |
http://rosettacode.org/wiki/Count_the_coins | Count the coins | There are four types of common coins in US currency:
quarters (25 cents)
dimes (10 cents)
nickels (5 cents), and
pennies (1 cent)
There are six ways to make change for 15 cents:
A dime and a nickel
A dime and 5 pennies
3 nickels
2 nickels and 5 pennies
A nickel and 10 pen... | #Picat | Picat | go =>
Problems = [[ 1*100, [25,10,5,1]], % 1 dollar
[ 100*100, [100,50,25,10,5,1]], % 100 dollars
[ 1_000*100, [100,50,25,10,5,1]], % 1000 dollars
[ 10_000*100, [100,50,25,10,5,1]], % 10000 dollars
[100_000*100, [100,50,25,10,5,1]] % 10000... |
http://rosettacode.org/wiki/Count_the_coins | Count the coins | There are four types of common coins in US currency:
quarters (25 cents)
dimes (10 cents)
nickels (5 cents), and
pennies (1 cent)
There are six ways to make change for 15 cents:
A dime and a nickel
A dime and 5 pennies
3 nickels
2 nickels and 5 pennies
A nickel and 10 pen... | #PicoLisp | PicoLisp | (de coins (Sum Coins)
(let (Buf (mapcar '((N) (cons 1 (need (dec N) 0))) Coins) Prev)
(do Sum
(zero Prev)
(for L Buf
(inc (rot L) Prev)
(setq Prev (car L)) ) )
Prev ) ) |
http://rosettacode.org/wiki/Count_occurrences_of_a_substring | Count occurrences of a substring | Task
Create a function, or show a built-in function, to count the number of non-overlapping occurrences of a substring inside a string.
The function should take two arguments:
the first argument being the string to search, and
the second a substring to be searched for.
It should return an integer cou... | #Maxima | Maxima | scount(e, s) := block(
[n: 0, k: 1],
while integerp(k: ssearch(e, s, k)) do (n: n + 1, k: k + 1),
n
)$
scount("na", "banana");
2 |
http://rosettacode.org/wiki/Count_occurrences_of_a_substring | Count occurrences of a substring | Task
Create a function, or show a built-in function, to count the number of non-overlapping occurrences of a substring inside a string.
The function should take two arguments:
the first argument being the string to search, and
the second a substring to be searched for.
It should return an integer cou... | #MiniScript | MiniScript | string.count = function(s)
return self.split(s).len - 1
end function
print "the three truths".count("th")
print "ababababab".count("abab") |
http://rosettacode.org/wiki/Count_in_octal | Count in octal | Task
Produce a sequential count in octal, starting at zero, and using an increment of a one for each consecutive number.
Each number should appear on a single line, and the program should count until terminated, or until the maximum value of the numeric type in use is reached.
Related task
Integer sequ... | #min | min | (
(dup 0 ==) (pop () 0 shorten)
(((8 mod) (8 div)) cleave) 'cons linrec
reverse 'print! foreach newline
) :octal
0 (dup octal succ)
9.223e18 int times ; close to max int value |
http://rosettacode.org/wiki/Count_in_octal | Count in octal | Task
Produce a sequential count in octal, starting at zero, and using an increment of a one for each consecutive number.
Each number should appear on a single line, and the program should count until terminated, or until the maximum value of the numeric type in use is reached.
Related task
Integer sequ... | #.D0.9C.D0.9A-61.2F52 | МК-61/52 | ИП0 П1 1 0 / [x] П1 Вx {x} 1
0 * 7 - x=0 21 ИП1 x#0 28 БП
02 ИП0 1 + П0 С/П БП 00 ИП0 lg
[x] 1 + 10^x П0 С/П БП 00 |
http://rosettacode.org/wiki/Count_in_octal | Count in octal | Task
Produce a sequential count in octal, starting at zero, and using an increment of a one for each consecutive number.
Each number should appear on a single line, and the program should count until terminated, or until the maximum value of the numeric type in use is reached.
Related task
Integer sequ... | #Modula-2 | Modula-2 | MODULE octal;
IMPORT InOut;
VAR num : CARDINAL;
BEGIN
num := 0;
REPEAT
InOut.WriteOct (num, 12); InOut.WriteLn;
INC (num)
UNTIL num = 0
END octal. |
http://rosettacode.org/wiki/Count_in_factors | Count in factors | Task
Write a program which counts up from 1, displaying each number as the multiplication of its prime factors.
For the purpose of this task, 1 (unity) may be shown as itself.
Example
2 is prime, so it would be shown as itself.
6 is not prime; it would be shown as
2
×
3
{\di... | #Liberty_BASIC | Liberty BASIC |
'see Run BASIC solution
for i = 1000 to 1016
print i;" = "; factorial$(i)
next
wait
function factorial$(num)
if num = 1 then factorial$ = "1"
fct = 2
while fct <= num
if (num mod fct) = 0 then
factorial$ = factorial$ ; x$ ; fct
x$ = " x "
num = num / fct
else
fct = fct + 1
end if
wend
end funct... |
http://rosettacode.org/wiki/Count_in_factors | Count in factors | Task
Write a program which counts up from 1, displaying each number as the multiplication of its prime factors.
For the purpose of this task, 1 (unity) may be shown as itself.
Example
2 is prime, so it would be shown as itself.
6 is not prime; it would be shown as
2
×
3
{\di... | #Lua | Lua | function factorize( n )
if n == 1 then return {1} end
local k = 2
res = {}
while n > 1 do
while n % k == 0 do
res[#res+1] = k
n = n / k
end
k = k + 1
end
return res
end
for i = 1, 22 do
io.write( i, ": " )
fac = factorize( i )
io.write( fac[1] )
for j = 2, #fa... |
http://rosettacode.org/wiki/Create_an_HTML_table | Create an HTML table | Create an HTML table.
The table body should have at least three rows of three columns.
Each of these three columns should be labelled "X", "Y", and "Z".
An extra column should be added at either the extreme left or the extreme right of the table that has no heading, but is filled with sequential row numbers.
The... | #Kotlin | Kotlin | // version 1.1.3
import java.util.Random
fun main(args: Array<String>) {
val r = Random()
val sb = StringBuilder()
val i = " " // indent
with (sb) {
append("<html>\n<head>\n")
append("<style>\n")
append("table, th, td { border: 1px solid black; }\n")
append("th, t... |
http://rosettacode.org/wiki/Date_format | Date format | This task has been clarified. Its programming examples are in need of review to ensure that they still fit the requirements of the task.
Task
Display the current date in the formats of:
2007-11-23 and
Friday, November 23, 2007
| #Vlang | Vlang | import time
fn main() {
println(time.now().custom_format("YYYY-MM-DD"))
println(time.now().custom_format("dddd, MMMM D, YYYY"))
} |
http://rosettacode.org/wiki/Date_format | Date format | This task has been clarified. Its programming examples are in need of review to ensure that they still fit the requirements of the task.
Task
Display the current date in the formats of:
2007-11-23 and
Friday, November 23, 2007
| #Wren | Wren | import "os" for Process
import "/date" for Date
var args = Process.arguments
if (args.count != 1) {
Fiber.abort("Please pass just the current date in yyyy-mm-dd format.")
}
var current = Date.parse(args[0])
System.print(current.format(Date.isoDate))
System.print(current.format("dddd|, |mmmm| |d|, |yyyy")) |
http://rosettacode.org/wiki/Create_a_file | Create a file | In this task, the job is to create a new empty file called "output.txt" of size 0 bytes
and an empty directory called "docs". This should be done twice: once "here", i.e. in the current working directory and once in the filesystem root.
| #Nanoquery | Nanoquery | import Nanoquery.IO
f = new(File)
f.create("output.txt")
f.createDir("docs")
// in the root directory
f.create("/output.txt")
f.createDir("/docs")
|
http://rosettacode.org/wiki/Create_a_file | Create a file | In this task, the job is to create a new empty file called "output.txt" of size 0 bytes
and an empty directory called "docs". This should be done twice: once "here", i.e. in the current working directory and once in the filesystem root.
| #Nemerle | Nemerle | using System;
using System.IO;
module CreateFile
{
Main() : void
{
unless (File.Exists("output.txt")) File.Create("output.txt"); // here
// returns a FileStream object which we're ignoring
try {
unless (File.Exists(@"\output.txt")) File.Create(@"\output.txt"); // ro... |
http://rosettacode.org/wiki/CSV_to_HTML_translation | CSV to HTML translation | Consider a simplified CSV format where all rows are separated by a newline
and all columns are separated by commas.
No commas are allowed as field data, but the data may contain
other characters and character sequences that would
normally be escaped when converted to HTML
Task
Create a function that takes a st... | #ML.2FI | ML/I | MCSKIP "WITH" NL
"" CSV to HTML
"" assumes macros on input stream 1, terminal on stream 2
MCSKIP MT,[]
MCSKIP SL WITH ~
MCINS %.
"" C1=th before header output, td afterwards
MCCVAR 1,2
MCSET C1=[th]
"" HTML escapes
MCDEF < AS [[<]]
MCDEF > AS [[>]]
MCDEF & AS [[&]]
"" Main line processing
MCDEF SL N1 OPT , N1... |
http://rosettacode.org/wiki/CSV_data_manipulation | CSV data manipulation | CSV spreadsheet files are suitable for storing tabular data in a relatively portable way.
The CSV format is flexible but somewhat ill-defined.
For present purposes, authors may assume that the data fields contain no commas, backslashes, or quotation marks.
Task
Read a CSV file, change some values and save the cha... | #TUSCRIPT | TUSCRIPT |
$$ MODE DATA
$$ csv=*
C1,C2,C3,C4,C5
1,5,9,13,17
2,6,10,14,18
3,7,11,15,19
4,8,12,16,20
$$ MODE TUSCRIPT
LOOP/CLEAR n,line=csv
IF (n==1) THEN
line=CONCAT (line,",SUM")
ELSE
lineadd=EXCHANGE(line,":,:':")
sum=SUM(lineadd)
line=JOIN(line,",",sum)
ENDIF
csv=APPEND(csv,line)
ENDLOOP
|
http://rosettacode.org/wiki/CSV_data_manipulation | CSV data manipulation | CSV spreadsheet files are suitable for storing tabular data in a relatively portable way.
The CSV format is flexible but somewhat ill-defined.
For present purposes, authors may assume that the data fields contain no commas, backslashes, or quotation marks.
Task
Read a CSV file, change some values and save the cha... | #TXR | TXR | @(coll)@{name /[^,]+/}@(end)
@(collect :vars (value sum))
@ (bind sum 0)
@ (coll)@{value /[^,]+/}@(set sum @(+ sum (int-str value)))@(end)
@(end)
@(output)
@ (rep)@name,@(last)SUM@(end)
@ (repeat)
@ (rep)@value,@(last)@sum@(end)
@ (end)
@(end)
|
http://rosettacode.org/wiki/Day_of_the_week | Day of the week | A company decides that whenever Xmas falls on a Sunday they will give their workers all extra paid holidays so that, together with any public holidays, workers will not have to work the following week (between the 25th of December and the first of January).
Task
In what years between 2008 and 2121 will the 25th of ... | #Wortel | Wortel | !-&y = 0 `.getDay. @new Date[y 11 25] @range[2008 2121] |
http://rosettacode.org/wiki/Day_of_the_week | Day of the week | A company decides that whenever Xmas falls on a Sunday they will give their workers all extra paid holidays so that, together with any public holidays, workers will not have to work the following week (between the 25th of December and the first of January).
Task
In what years between 2008 and 2121 will the 25th of ... | #Wren | Wren | import "/date" for Date
System.print("Years between 2008 and 2121 when 25th December falls on Sunday:")
for (year in 2008..2121) {
if (Date.new(year, 12, 25).dayOfWeek == 7) System.print(year)
} |
http://rosettacode.org/wiki/Create_a_two-dimensional_array_at_runtime | Create a two-dimensional array at runtime |
Data Structure
This illustrates a data structure, a means of storing data within a program.
You may see other such structures in the Data Structures category.
Get two integers from the user, then create a two-dimensional array where the two dimensions have the sizes given by those numbers, and which can be accessed ... | #PicoLisp | PicoLisp | (de 2dimTest (DX DY)
(let A (make (do DX (link (need DY))))
(set (nth A 3 3) 999) # Set A[3][3] to 999
(mapc println A) # Print all
(get A 3 3) ) ) # Return A[3][3]
(2dimTest 5 5) |
http://rosettacode.org/wiki/Create_a_two-dimensional_array_at_runtime | Create a two-dimensional array at runtime |
Data Structure
This illustrates a data structure, a means of storing data within a program.
You may see other such structures in the Data Structures category.
Get two integers from the user, then create a two-dimensional array where the two dimensions have the sizes given by those numbers, and which can be accessed ... | #PL.2FI | PL/I |
/* First way using a controlled variable: */
declare A(*,*) float controlled;
get list (m, n);
allocate A(m,n);
get list (A);
put skip list (A);
/* The array remains allocated until the program terminates, */
/* or until explicitly destroyed using a FREE statement. */
free A;
|
http://rosettacode.org/wiki/Cumulative_standard_deviation | Cumulative standard deviation | Task[edit]
Write a stateful function, class, generator or co-routine that takes a series of floating point numbers, one at a time, and returns the running standard deviation of the series.
The task implementation should use the most natural programming style of those listed for the function in the implementation langu... | #PHP | PHP | <?php
class sdcalc {
private $cnt, $sumup, $square;
function __construct() {
$this->reset();
}
# callable on an instance
function reset() {
$this->cnt=0; $this->sumup=0; $this->square=0;
}
function add($f) {
$this->cnt++;
$this->sumup += $f;
$this->s... |
http://rosettacode.org/wiki/Count_the_coins | Count the coins | There are four types of common coins in US currency:
quarters (25 cents)
dimes (10 cents)
nickels (5 cents), and
pennies (1 cent)
There are six ways to make change for 15 cents:
A dime and a nickel
A dime and 5 pennies
3 nickels
2 nickels and 5 pennies
A nickel and 10 pen... | #Prolog | Prolog | :- use_module(library(clpfd)).
% Basic, Q = Quarter, D = Dime, N = Nickel, P = Penny
coins(Q, D, N, P, T) :-
[Q,D,N,P] ins 0..T,
T #= (Q * 25) + (D * 10) + (N * 5) + P.
coins_for(T) :-
coins(Q,D,N,P,T),
maplist(indomain, [Q,D,N,P]). |
http://rosettacode.org/wiki/Count_the_coins | Count the coins | There are four types of common coins in US currency:
quarters (25 cents)
dimes (10 cents)
nickels (5 cents), and
pennies (1 cent)
There are six ways to make change for 15 cents:
A dime and a nickel
A dime and 5 pennies
3 nickels
2 nickels and 5 pennies
A nickel and 10 pen... | #Python | Python | def changes(amount, coins):
ways = [0] * (amount + 1)
ways[0] = 1
for coin in coins:
for j in xrange(coin, amount + 1):
ways[j] += ways[j - coin]
return ways[amount]
print changes(100, [1, 5, 10, 25])
print changes(100000, [1, 5, 10, 25, 50, 100]) |
http://rosettacode.org/wiki/Count_occurrences_of_a_substring | Count occurrences of a substring | Task
Create a function, or show a built-in function, to count the number of non-overlapping occurrences of a substring inside a string.
The function should take two arguments:
the first argument being the string to search, and
the second a substring to be searched for.
It should return an integer cou... | #Mirah | Mirah | import java.util.regex.Pattern
import java.util.regex.Matcher
#The "remove and count the difference" method
def count_substring(pattern:string, source:string)
(source.length() - source.replace(pattern, "").length()) / pattern.length()
end
puts count_substring("th", "the three truths") # ==> 3
puts count_su... |
http://rosettacode.org/wiki/Count_occurrences_of_a_substring | Count occurrences of a substring | Task
Create a function, or show a built-in function, to count the number of non-overlapping occurrences of a substring inside a string.
The function should take two arguments:
the first argument being the string to search, and
the second a substring to be searched for.
It should return an integer cou... | #Nanoquery | Nanoquery | def countSubstring(str, subStr)
return int((len(str) - len(str.replace(subStr, ""))) / len(subStr))
end |
http://rosettacode.org/wiki/Count_in_octal | Count in octal | Task
Produce a sequential count in octal, starting at zero, and using an increment of a one for each consecutive number.
Each number should appear on a single line, and the program should count until terminated, or until the maximum value of the numeric type in use is reached.
Related task
Integer sequ... | #Nanoquery | Nanoquery | i = 0
while i < 2^64
println format("%o", i)
i += 1
end |
http://rosettacode.org/wiki/Count_in_octal | Count in octal | Task
Produce a sequential count in octal, starting at zero, and using an increment of a one for each consecutive number.
Each number should appear on a single line, and the program should count until terminated, or until the maximum value of the numeric type in use is reached.
Related task
Integer sequ... | #NetRexx | NetRexx | /* NetRexx */
options replace format comments java crossref symbols binary
import java.math.BigInteger
-- allow an option to change the output radix.
parse arg radix .
if radix.length() == 0 then radix = 8
k_ = BigInteger
k_ = BigInteger.ZERO
loop forever
say k_.toString(int radix)
k_ = k_.add(BigInteger.ONE)... |
http://rosettacode.org/wiki/Count_in_factors | Count in factors | Task
Write a program which counts up from 1, displaying each number as the multiplication of its prime factors.
For the purpose of this task, 1 (unity) may be shown as itself.
Example
2 is prime, so it would be shown as itself.
6 is not prime; it would be shown as
2
×
3
{\di... | #M2000_Interpreter | M2000 Interpreter |
Module Count_in_factors {
Inventory Known1=2@, 3@
IsPrime=lambda Known1 (x as decimal) -> {
=0=1
if exist(Known1, x) then =1=1 : exit
if x<=5 OR frac(x) then {if x == 2 OR x == 3 OR x == 5 then Append Known1, x : =1=1
Break}
if frac(x/2) else exit
if frac(x/3) else exit
x1=sqrt(x):d = 5@
{if fr... |
http://rosettacode.org/wiki/Count_in_factors | Count in factors | Task
Write a program which counts up from 1, displaying each number as the multiplication of its prime factors.
For the purpose of this task, 1 (unity) may be shown as itself.
Example
2 is prime, so it would be shown as itself.
6 is not prime; it would be shown as
2
×
3
{\di... | #M4 | M4 | define(`for',
`ifelse($#,0,``$0'',
`ifelse(eval($2<=$3),1,
`pushdef(`$1',$2)$5`'popdef(`$1')$0(`$1',eval($2+$4),$3,$4,`$5')')')')dnl
define(`by',
`ifelse($1,$2,
$1,
`ifelse(eval($1%$2==0),1,
`$2 x by(eval($1/$2),$2)',
`by($1,eval($2+1))') ') ')dnl
define(`wby',
`$1 = ifelse(... |
http://rosettacode.org/wiki/Create_an_HTML_table | Create an HTML table | Create an HTML table.
The table body should have at least three rows of three columns.
Each of these three columns should be labelled "X", "Y", and "Z".
An extra column should be added at either the extreme left or the extreme right of the table that has no heading, but is filled with sequential row numbers.
The... | #Lambdatalk | Lambdatalk |
{table
{@ style="background:#ffe; width:50%;"}
{tr {@ style="text-align:right; font:bold 1.0em arial;"}
{td } {td X} {td Y} {td Z}}
{map {lambda {:i}
{tr {td {b :i}}
{map {lambda {_}
{td {@ style="text-align:right; font:italic 1.0em courier;"}
{floor {* {random... |
http://rosettacode.org/wiki/Date_format | Date format | This task has been clarified. Its programming examples are in need of review to ensure that they still fit the requirements of the task.
Task
Display the current date in the formats of:
2007-11-23 and
Friday, November 23, 2007
| #XPL0 | XPL0 | include c:\cxpl\codes;
int CpuReg, Year, Month, Day, DName, MName, WDay;
[CpuReg:= GetReg; \access CPU registers
CpuReg(0):= $2A00; \DOS system call
SoftInt($21);
Year:= CpuReg(2);
Month:= CpuReg(3) >> 8;
Day:= CpuReg(3) & $FF;
WDay:= CpuReg(0) & $FF;
IntOut(0, Year); ChOut(0, ^-);
if Month<10 then ChOut(0,... |
http://rosettacode.org/wiki/Date_format | Date format | This task has been clarified. Its programming examples are in need of review to ensure that they still fit the requirements of the task.
Task
Display the current date in the formats of:
2007-11-23 and
Friday, November 23, 2007
| #Yabasic | Yabasic | dim n$(1)
n = token(date$, n$(), "-")
print n$(4), "-", n$(2), "-", n$(3)
print nDay$(n$(5)), ", ", nMonth$(n$(6)), " ", n$(3), ", ", n$(4)
sub nDay$(n$)
switch n$
case "Mon": case "Fri": case "Sun": break
case "Tue": n$ = n$ + "s" : break
case "Wed": n$ = n$ + "nes" : break
case "Thu": n$ = n$ + "rs" : brea... |
http://rosettacode.org/wiki/Create_a_file | Create a file | In this task, the job is to create a new empty file called "output.txt" of size 0 bytes
and an empty directory called "docs". This should be done twice: once "here", i.e. in the current working directory and once in the filesystem root.
| #NetRexx | NetRexx | /* NetRexx */
options replace format comments java crossref symbols nobinary
fName = ''; fName[0] = 2; fName[1] = '.' || File.separator || 'output.txt'; fName[2] = File.separator || 'output.txt'
dName = ''; dName[0] = 2; dName[1] = '.' || File.separator || 'docs'; dName[2] = File.separator || 'docs'
do
loop... |
http://rosettacode.org/wiki/CSV_to_HTML_translation | CSV to HTML translation | Consider a simplified CSV format where all rows are separated by a newline
and all columns are separated by commas.
No commas are allowed as field data, but the data may contain
other characters and character sequences that would
normally be escaped when converted to HTML
Task
Create a function that takes a st... | #Nanoquery | Nanoquery | // a method that converts a csv row into a html table row as a string
def toHtmlRow(record, tag)
htmlrow = "\t<tr>\n"
// loop through the values in the current csv row
for i in range(1, len(record))
htmlrow = htmlrow + "\t\t<" + tag + ">" + (record ~ i) + "</" + tag + ">\n"
end for
return htmlrow + "\t</tr>\... |
http://rosettacode.org/wiki/CSV_data_manipulation | CSV data manipulation | CSV spreadsheet files are suitable for storing tabular data in a relatively portable way.
The CSV format is flexible but somewhat ill-defined.
For present purposes, authors may assume that the data fields contain no commas, backslashes, or quotation marks.
Task
Read a CSV file, change some values and save the cha... | #UNIX_Shell | UNIX Shell | cat csv | while read S; do
[ -z ${S##*C*} ] && echo $S,SUM || echo $S,`echo $S | tr ',' '+' | bc`
done |
http://rosettacode.org/wiki/CSV_data_manipulation | CSV data manipulation | CSV spreadsheet files are suitable for storing tabular data in a relatively portable way.
The CSV format is flexible but somewhat ill-defined.
For present purposes, authors may assume that the data fields contain no commas, backslashes, or quotation marks.
Task
Read a CSV file, change some values and save the cha... | #uBasic.2F4tH | uBasic/4tH | if set (a, open ("yourcsv.csv", "r")) < 0 then
print "Cannot open \qyourcsv.csv\q" ' open file a for reading
end ' abort on file opening errors
endif
if set (b, open ("mycsv.csv", "w")) < 0 then
print "Cannot open \qmycsv.csv\q" ' open file a for writing
end ... |
http://rosettacode.org/wiki/Day_of_the_week | Day of the week | A company decides that whenever Xmas falls on a Sunday they will give their workers all extra paid holidays so that, together with any public holidays, workers will not have to work the following week (between the 25th of December and the first of January).
Task
In what years between 2008 and 2121 will the 25th of ... | #XPL0 | XPL0 | include c:\cxpl\codes; \intrinsic 'code' declarations
func WeekDay(Year, Month, Day); \Return day of week (0=Sat 1=Sun..6=Fri)
int Year, Month, Day;
[if Month<=2 then [Month:= Month+12; Year:= Year-1];
return rem((Day + (Month+1)*26/10 + Year + Year/4 + Year/100*6 + Year/400) / 7);
]; ... |
http://rosettacode.org/wiki/Day_of_the_week | Day of the week | A company decides that whenever Xmas falls on a Sunday they will give their workers all extra paid holidays so that, together with any public holidays, workers will not have to work the following week (between the 25th of December and the first of January).
Task
In what years between 2008 and 2121 will the 25th of ... | #Yabasic | Yabasic | sub wd(m, d, y)
If m < 3 Then // If m = 1 Or m = 2 Then
m = m + 12
y = y - 1
End If
Return mod((y + int(y / 4) - int(y / 100) + int(y / 400) + d + int((153 * m + 8) / 5)), 7)
End sub
// ------=< MAIN >=------
For yr = 2008 To 2121
If wd(12, 25, yr) = 0 Then
Print "Dec 25 ", yr
EndIf
Nex... |
Subsets and Splits
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Rosetta Code Task Comparisons
Identifies tasks common to both COBOL and Python languages that are described as having difficulty levels, revealing cross-language task similarities and providing useful comparative programming examples.
SQL Code Examples from Training Data
Retrieves raw SQL code examples for the SQL language, which is basic data retrieval without meaningful analysis or patterns.
SQL Code Examples from Training Data
Retrieves raw SQL code examples for the SQL language, which is basic filtering that shows what data looks like but doesn't provide meaningful analysis or patterns.
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