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/String_concatenation | String concatenation | String concatenation
You are encouraged to solve this task according to the task description, using any language you may know.
Task
Create a string variable equal to any text value.
Create another string variable whose value is the original variable concatenated with another string literal.
To illustrate the operat... | #Perl | Perl | my $s = 'hello';
print $s . ' literal', "\n";
my $s1 = $s . ' literal';
print $s1, "\n"; |
http://rosettacode.org/wiki/String_concatenation | String concatenation | String concatenation
You are encouraged to solve this task according to the task description, using any language you may know.
Task
Create a string variable equal to any text value.
Create another string variable whose value is the original variable concatenated with another string literal.
To illustrate the operat... | #Phix | Phix | string s1 = "at" ?s1
string s2 = "c"&s1 ?s2
string s3 = "s"&s1 ?s3
string s4 = "m"&s1 ?s4
string s5 = "The "&s2&" "&s3&" on the "&s4&"." ?s5
|
http://rosettacode.org/wiki/Sum_multiples_of_3_and_5 | Sum multiples of 3 and 5 | Task
The objective is to write a function that finds the sum of all positive multiples of 3 or 5 below n.
Show output for n = 1000.
This is is the same as Project Euler problem 1.
Extra credit: do this efficiently for n = 1e20 or higher.
| #Run_BASIC | Run BASIC | print multSum35(1000)
end
function multSum35(n)
for i = 1 to n - 1
If (i mod 3 = 0) or (i mod 5 = 0) then multSum35 = multSum35 + i
next i
end function |
http://rosettacode.org/wiki/Sum_digits_of_an_integer | Sum digits of an integer | Task
Take a Natural Number in a given base and return the sum of its digits:
110 sums to 1
123410 sums to 10
fe16 sums to 29
f0e16 sums to 29
| #Standard_ML | Standard ML | fun sumDigits (0, _) = 0
| sumDigits (n, base) = n mod base + sumDigits (n div base, base)
val testInput = [(1, 10), (1234, 10), (0xfe, 16), (0xf0e, 16)]
val () = print (String.concatWith " " (map (Int.toString o sumDigits) testInput) ^ "\n") |
http://rosettacode.org/wiki/Sum_of_squares | Sum of squares | Task
Write a program to find the sum of squares of a numeric vector.
The program should work on a zero-length vector (with an answer of 0).
Related task
Mean
| #TUSCRIPT | TUSCRIPT |
$$ MODE TUSCRIPT
array="3'1'4'1'5'9",sum=0
LOOP a=array
sum=sum+(a*a)
ENDLOOP
PRINT sum
|
http://rosettacode.org/wiki/Sum_of_squares | Sum of squares | Task
Write a program to find the sum of squares of a numeric vector.
The program should work on a zero-length vector (with an answer of 0).
Related task
Mean
| #UnixPipes | UnixPipes | folder() {
(read B; res=$( expr $1 \* $1 ) ; test -n "$B" && expr $res + $B || echo $res)
}
fold() {
(while read a ; do
fold | folder $a
done)
}
(echo 3; echo 1; echo 4;echo 1;echo 5; echo 9) | fold |
http://rosettacode.org/wiki/Strip_whitespace_from_a_string/Top_and_tail | Strip whitespace from a string/Top and tail | Task
Demonstrate how to strip leading and trailing whitespace from a string.
The solution should demonstrate how to achieve the following three results:
String with leading whitespace removed
String with trailing whitespace removed
String with both leading and trailing whitespace removed
For the purposes of thi... | #Vala | Vala | string s = " word ";
string s_chug = s.chug(); |
http://rosettacode.org/wiki/Strip_whitespace_from_a_string/Top_and_tail | Strip whitespace from a string/Top and tail | Task
Demonstrate how to strip leading and trailing whitespace from a string.
The solution should demonstrate how to achieve the following three results:
String with leading whitespace removed
String with trailing whitespace removed
String with both leading and trailing whitespace removed
For the purposes of thi... | #VBA | VBA | Public Sub test()
'LTrim trims leading spaces
'RTrim trims tailing spaces
'Trim trims both leading and tailing spaces
s = " trim "
Debug.Print """" & s & """"
Debug.Print """" & LTrim(s) & """"
Debug.Print """" & RTrim(s) & """"
Debug.Print """" & WorksheetFunction.trim(s) & """"
'th... |
http://rosettacode.org/wiki/Substring | Substring |
Basic Data Operation
This is a basic data operation. It represents a fundamental action on a basic data type.
You may see other such operations in the Basic Data Operations category, or:
Integer Operations
Arithmetic |
Comparison
Boolean Operations
Bitwise |
Logical
String Operations
Concatenation |
Interpolation |... | #Maxima | Maxima | s: "the quick brown fox jumps over the lazy dog";
substring(s, 17);
/* "fox jumps over the lazy dog" */
substring(s, 17, 20);
/* "fox" */ |
http://rosettacode.org/wiki/Sudoku | Sudoku | Task
Solve a partially filled-in normal 9x9 Sudoku grid and display the result in a human-readable format.
references
Algorithmics of Sudoku may help implement this.
Python Sudoku Solver Computerphile video.
| #Sidef | Sidef | func check(i, j) is cached {
var (id, im) = i.divmod(9)
var (jd, jm) = j.divmod(9)
jd == id && return true
jm == im && return true
(id//3 == jd//3) &&
(jm//3 == im//3)
}
func solve(grid) {
for i in ^grid {
grid[i] && next
var t = [grid[{|j| check(i, j) }.grep(^grid)]].f... |
http://rosettacode.org/wiki/Substring/Top_and_tail | Substring/Top and tail | The task is to demonstrate how to remove the first and last characters from a string.
The solution should demonstrate how to obtain the following results:
String with first character removed
String with last character removed
String with both the first and last characters removed
If the program uses UTF-8 or UTF... | #Sidef | Sidef | say "knight".substr(1); # strip first character
say "socks".substr(0, -1); # strip last character
say "brooms".substr(1, -1); # strip both first and last characters
say "与今令".substr(1, -1); # => 今 |
http://rosettacode.org/wiki/Sum_and_product_of_an_array | Sum and product of an array | Task
Compute the sum and product of an array of integers.
| #Raven | Raven | 0 [ 1 2 3 ] each +
1 [ 1 2 3 ] each * |
http://rosettacode.org/wiki/Sum_and_product_of_an_array | Sum and product of an array | Task
Compute the sum and product of an array of integers.
| #REBOL | REBOL | rebol [
Title: "Sum and Product"
URL: http://rosettacode.org/wiki/Sum_and_product_of_array
]
; Simple:
sum: func [a [block!] /local x] [x: 0 forall a [x: x + a/1] x]
product: func [a [block!] /local x] [x: 1 forall a [x: x * a/1] x]
; Way too fancy:
redux: func [
"Applies an operation across an a... |
http://rosettacode.org/wiki/Sum_of_a_series | Sum of a series | Compute the nth term of a series, i.e. the sum of the n first terms of the corresponding sequence.
Informally this value, or its limit when n tends to infinity, is also called the sum of the series, thus the title of this task.
For this task, use:
S
n
=
∑
k
=
1
n
1
k
2
{\displa... | #NewLISP | NewLISP | (let (s 0)
(for (i 1 1000)
(inc s (div 1 (* i i))))
(println s)) |
http://rosettacode.org/wiki/String_interpolation_(included) | String interpolation (included) |
Basic Data Operation
This is a basic data operation. It represents a fundamental action on a basic data type.
You may see other such operations in the Basic Data Operations category, or:
Integer Operations
Arithmetic |
Comparison
Boolean Operations
Bitwise |
Logical
String Operations
Concatenation |
Interpolation |... | #Wren | Wren | var s = "little"
var t = "Mary had a %(s) lamb"
System.print(t) |
http://rosettacode.org/wiki/String_interpolation_(included) | String interpolation (included) |
Basic Data Operation
This is a basic data operation. It represents a fundamental action on a basic data type.
You may see other such operations in the Basic Data Operations category, or:
Integer Operations
Arithmetic |
Comparison
Boolean Operations
Bitwise |
Logical
String Operations
Concatenation |
Interpolation |... | #Vlang | Vlang |
txt := "little"
str := "Mary had a $txt lamb"
println(str)
|
http://rosettacode.org/wiki/String_interpolation_(included) | String interpolation (included) |
Basic Data Operation
This is a basic data operation. It represents a fundamental action on a basic data type.
You may see other such operations in the Basic Data Operations category, or:
Integer Operations
Arithmetic |
Comparison
Boolean Operations
Bitwise |
Logical
String Operations
Concatenation |
Interpolation |... | #XPL0 | XPL0 | char X;
[X:= "little";
Text(0, "Mary had a "); Text(0, X); Text(0, " lamb.");
] |
http://rosettacode.org/wiki/Strip_a_set_of_characters_from_a_string | Strip a set of characters from a string | Task
Create a function that strips a set of characters from a string.
The function should take two arguments:
a string to be stripped
a string containing the set of characters to be stripped
The returned string should contain the first string, stripped of any characters in the second argument:
print str... | #ScriptBasic | ScriptBasic |
str1 = "She was a soul stripper. She took my heart!"
rmv = "aei"
FOR i = 1 TO LEN(rmv)
str1 = REPLACE(str1, MID(rmv, i, 1), "")
NEXT
PRINT str1,"\n"
|
http://rosettacode.org/wiki/Strip_a_set_of_characters_from_a_string | Strip a set of characters from a string | Task
Create a function that strips a set of characters from a string.
The function should take two arguments:
a string to be stripped
a string containing the set of characters to be stripped
The returned string should contain the first string, stripped of any characters in the second argument:
print str... | #Sed | Sed | #!/bin/bash
strip_char()
{
echo "$1" | sed "s/[$2]//g"
} |
http://rosettacode.org/wiki/String_comparison | String comparison |
Basic Data Operation
This is a basic data operation. It represents a fundamental action on a basic data type.
You may see other such operations in the Basic Data Operations category, or:
Integer Operations
Arithmetic |
Comparison
Boolean Operations
Bitwise |
Logical
String Operations
Concatenation |
Interpolation |... | #Rust | Rust | use std::ascii::AsciiExt; // for case insensitives only
fn main() {
// only same types can be compared
// String and String or &str and &str
// exception: strict equality and inequality also work on &str and String
let a: &str = "abc";
let b: String = "Bac".to_owned();
// Strings are coerced... |
http://rosettacode.org/wiki/String_comparison | String comparison |
Basic Data Operation
This is a basic data operation. It represents a fundamental action on a basic data type.
You may see other such operations in the Basic Data Operations category, or:
Integer Operations
Arithmetic |
Comparison
Boolean Operations
Bitwise |
Logical
String Operations
Concatenation |
Interpolation |... | #Scala | Scala | object Compare extends App {
def compare(a: String, b: String) {
if (a == b) println(s"'$a' and '$b' are lexically equal.")
else println(s"'$a' and '$b' are not lexically equal.")
if (a.equalsIgnoreCase(b)) println(s"'$a' and '$b' are case-insensitive lexically equal.")
else println(s"'$a' and '$b' ... |
http://rosettacode.org/wiki/String_case | String case | Task
Take the string alphaBETA and demonstrate how to convert it to:
upper-case and
lower-case
Use the default encoding of a string literal or plain ASCII if there is no string literal in your language.
Note: In some languages alphabets toLower and toUpper is not reversable.
Show any additional... | #min | min | "alphaBETA" uppercase
"alphaBETA" lowercase
"alphaBETA" capitalize |
http://rosettacode.org/wiki/String_case | String case | Task
Take the string alphaBETA and demonstrate how to convert it to:
upper-case and
lower-case
Use the default encoding of a string literal or plain ASCII if there is no string literal in your language.
Note: In some languages alphabets toLower and toUpper is not reversable.
Show any additional... | #MiniScript | MiniScript | mixedString = "alphaBETA"
print "Upper Case of " + mixedString + " is " + mixedString.upper
print "Lower Case of " + mixedString + " is " + mixedString.lower |
http://rosettacode.org/wiki/String_matching | String matching |
Basic Data Operation
This is a basic data operation. It represents a fundamental action on a basic data type.
You may see other such operations in the Basic Data Operations category, or:
Integer Operations
Arithmetic |
Comparison
Boolean Operations
Bitwise |
Logical
String Operations
Concatenation |
Interpolation |... | #Lingo | Lingo | a = "Hello world!"
b = "Hello"
-- Determining if the first string starts with second string
put a starts b
-- 1
-- Determining if the first string contains the second string at any location
put a contains b
-- 1
-- Determining if the first string ends with the second string
put a.char[a.length-b.length+1..a.lengt... |
http://rosettacode.org/wiki/String_length | String length | Task
Find the character and byte length of a string.
This means encodings like UTF-8 need to be handled properly, as there is not necessarily a one-to-one relationship between bytes and characters.
By character, we mean an individual Unicode code point, not a user-visible grapheme containing combining characters.
F... | #Kotlin | Kotlin | // version 1.0.6
fun main(args: Array<String>) {
val s = "José"
println("The char length is ${s.length}")
println("The byte length is ${Character.BYTES * s.length}")
} |
http://rosettacode.org/wiki/String_concatenation | String concatenation | String concatenation
You are encouraged to solve this task according to the task description, using any language you may know.
Task
Create a string variable equal to any text value.
Create another string variable whose value is the original variable concatenated with another string literal.
To illustrate the operat... | #PHL | PHL | module stringcat;
extern printf;
@Integer main [
var a = "hello";
var b = a + " literal";
printf("%s\n", b);
return 0;
] |
http://rosettacode.org/wiki/String_concatenation | String concatenation | String concatenation
You are encouraged to solve this task according to the task description, using any language you may know.
Task
Create a string variable equal to any text value.
Create another string variable whose value is the original variable concatenated with another string literal.
To illustrate the operat... | #PHP | PHP | <?php
$s = "hello";
echo $s . " literal" . "\n";
$s1 = $s . " literal";
echo $s1 . "\n";
?> |
http://rosettacode.org/wiki/Sum_multiples_of_3_and_5 | Sum multiples of 3 and 5 | Task
The objective is to write a function that finds the sum of all positive multiples of 3 or 5 below n.
Show output for n = 1000.
This is is the same as Project Euler problem 1.
Extra credit: do this efficiently for n = 1e20 or higher.
| #Rust | Rust |
extern crate rug;
use rug::Integer;
use rug::ops::Pow;
fn main() {
for i in [3, 20, 100, 1_000].iter() {
let ten = Integer::from(10);
let mut limit = Integer::from(Integer::from(&ten.pow(*i as u32)) - 1);
let mut aux_3_1 = &limit.mod_u(3u32);
let mut aux_3_2 = Integer::from(&li... |
http://rosettacode.org/wiki/Sum_digits_of_an_integer | Sum digits of an integer | Task
Take a Natural Number in a given base and return the sum of its digits:
110 sums to 1
123410 sums to 10
fe16 sums to 29
f0e16 sums to 29
| #Stata | Stata | function sumdigits(s) {
a = ascii(strupper(s)):-48
return(sum(a:-(a:>9)*7))
}
sumdigits("1")
1
sumdigits("1234")
10
sumdigits("fe")
29
sumdigits("f0e")
29
sumdigits(inbase(16, 254, 10))
29 |
http://rosettacode.org/wiki/Sum_of_squares | Sum of squares | Task
Write a program to find the sum of squares of a numeric vector.
The program should work on a zero-length vector (with an answer of 0).
Related task
Mean
| #Unix_shell | Unix shell | $ cat toto
1
2
4
8
16
$ cat toto toto | paste -sd*
1*2*4*8*16*1*2*4*8*16
$ cat toto toto | paste -sd* | bc -l
1048576
|
http://rosettacode.org/wiki/Sum_of_squares | Sum of squares | Task
Write a program to find the sum of squares of a numeric vector.
The program should work on a zero-length vector (with an answer of 0).
Related task
Mean
| #Ursala | Ursala | #import nat
ssq = sum:-0+ product*iip
#cast %n
main = ssq <21,12,77,0,94,23,96,93,72,72,79,24,8,50,9,93> |
http://rosettacode.org/wiki/Strip_whitespace_from_a_string/Top_and_tail | Strip whitespace from a string/Top and tail | Task
Demonstrate how to strip leading and trailing whitespace from a string.
The solution should demonstrate how to achieve the following three results:
String with leading whitespace removed
String with trailing whitespace removed
String with both leading and trailing whitespace removed
For the purposes of thi... | #VBScript | VBScript |
Function LeftTrim(s)
Set regex = New RegExp
With regex
.Pattern = "^\s*"
If .Test(s) Then
LeftTrim = .Replace(s,"")
Else
LeftTrim = s
End If
End With
End Function
Function RightTrim(s)
Set regex = New RegExp
With regex
.Pattern = "\s*$"
If .Test(s) Then
RightTrim = .Replace(s,"")
Else
... |
http://rosettacode.org/wiki/Strip_whitespace_from_a_string/Top_and_tail | Strip whitespace from a string/Top and tail | Task
Demonstrate how to strip leading and trailing whitespace from a string.
The solution should demonstrate how to achieve the following three results:
String with leading whitespace removed
String with trailing whitespace removed
String with both leading and trailing whitespace removed
For the purposes of thi... | #Wren | Wren | var a = " \t\r\nString with leading whitespace removed"
var b = "String with trailing whitespace removed \t\r\n"
var c = " \t\r\nString with both leading and trailing whitespace removed \t\r\n"
var d = " \t\r\n\f\vString with leading whitespace, form feed and verical tab characters removed"
System.print("'%(a.trim... |
http://rosettacode.org/wiki/Substring | Substring |
Basic Data Operation
This is a basic data operation. It represents a fundamental action on a basic data type.
You may see other such operations in the Basic Data Operations category, or:
Integer Operations
Arithmetic |
Comparison
Boolean Operations
Bitwise |
Logical
String Operations
Concatenation |
Interpolation |... | #MUMPS | MUMPS |
SUBSTR(S,N,M,C,K)
;show substring operations
;S is the string
;N is a position within the string (that is, n<length(string))
;M is an integer of positions to show
;C is a character within the string S
;K is a substring within the string S
;$Find returns the position after the substring
NEW X
WRITE !,"The bas... |
http://rosettacode.org/wiki/Substring | Substring |
Basic Data Operation
This is a basic data operation. It represents a fundamental action on a basic data type.
You may see other such operations in the Basic Data Operations category, or:
Integer Operations
Arithmetic |
Comparison
Boolean Operations
Bitwise |
Logical
String Operations
Concatenation |
Interpolation |... | #Nanoquery | Nanoquery | str = "test string"
println substr(str, m, m + n)
println substr(str, n, len(str))
println substr(str, 0, len(str) - 1)
println substr(str, str.indexOf("s"), str.indexOf("s") + m)
println substr(str, str.indexOf("str"), str.indexOf("str") + m) |
http://rosettacode.org/wiki/Sudoku | Sudoku | Task
Solve a partially filled-in normal 9x9 Sudoku grid and display the result in a human-readable format.
references
Algorithmics of Sudoku may help implement this.
Python Sudoku Solver Computerphile video.
| #Shale | Shale |
#!/usr/local/bin/shale
time library
// This solves a sudoku with:
// row/column/3x3box constraints (standard sudoku)
// row/column/irregular, or jigsaw, region constraints
// optionally with a Chess Knight's move constraint.
// It is based on the python code from the Computerphile video
// https://www.youtube.... |
http://rosettacode.org/wiki/Substring/Top_and_tail | Substring/Top and tail | The task is to demonstrate how to remove the first and last characters from a string.
The solution should demonstrate how to obtain the following results:
String with first character removed
String with last character removed
String with both the first and last characters removed
If the program uses UTF-8 or UTF... | #Smalltalk | Smalltalk |
s := 'upraisers'.
Transcript show: 'Top: ', s allButLast; nl.
Transcript show: 'Tail: ', s allButFirst; nl.
Transcript show: 'Without both: ', s allButFirst allButLast; nl.
Transcript show: 'Without both using substring method: ', (s copyFrom: 2 to: s size - 1); nl.
|
http://rosettacode.org/wiki/Sum_and_product_of_an_array | Sum and product of an array | Task
Compute the sum and product of an array of integers.
| #Red | Red | Red [
red-version: 0.6.4
description: "Find the sum and product of an array of numbers."
]
product: function [
"Returns the product of all values in a block."
values [any-list! vector!]
][
result: 1
foreach value values [result: result * value]
result
]
a: [1 2 3 4 5 6 7 8 9 10]
print a
... |
http://rosettacode.org/wiki/Sum_of_a_series | Sum of a series | Compute the nth term of a series, i.e. the sum of the n first terms of the corresponding sequence.
Informally this value, or its limit when n tends to infinity, is also called the sum of the series, thus the title of this task.
For this task, use:
S
n
=
∑
k
=
1
n
1
k
2
{\displa... | #Nial | Nial | |sum (1 / power (count 1000) 2)
=1.64393 |
http://rosettacode.org/wiki/String_interpolation_(included) | String interpolation (included) |
Basic Data Operation
This is a basic data operation. It represents a fundamental action on a basic data type.
You may see other such operations in the Basic Data Operations category, or:
Integer Operations
Arithmetic |
Comparison
Boolean Operations
Bitwise |
Logical
String Operations
Concatenation |
Interpolation |... | #zkl | zkl | "Mary had a X lamb.".replace("X","big") |
http://rosettacode.org/wiki/Strip_a_set_of_characters_from_a_string | Strip a set of characters from a string | Task
Create a function that strips a set of characters from a string.
The function should take two arguments:
a string to be stripped
a string containing the set of characters to be stripped
The returned string should contain the first string, stripped of any characters in the second argument:
print str... | #Seed7 | Seed7 | $ include "seed7_05.s7i";
const func string: stripchars (in string: mainStri, in string: charList) is func
result
var string: strippedStri is "";
local
var char: ch is ' ';
begin
strippedStri := mainStri;
for ch range charList do
strippedStri := replace(strippedStri, str(ch), "");
end ... |
http://rosettacode.org/wiki/Strip_a_set_of_characters_from_a_string | Strip a set of characters from a string | Task
Create a function that strips a set of characters from a string.
The function should take two arguments:
a string to be stripped
a string containing the set of characters to be stripped
The returned string should contain the first string, stripped of any characters in the second argument:
print str... | #Sidef | Sidef | func stripchars(str, char_list) {
str.tr(char_list, "", "d");
} |
http://rosettacode.org/wiki/String_comparison | String comparison |
Basic Data Operation
This is a basic data operation. It represents a fundamental action on a basic data type.
You may see other such operations in the Basic Data Operations category, or:
Integer Operations
Arithmetic |
Comparison
Boolean Operations
Bitwise |
Logical
String Operations
Concatenation |
Interpolation |... | #Scheme | Scheme |
;; Comparing two strings for exact equality
(string=? "hello" "hello")
;; Comparing two strings for inequality
(not (string=? "hello" "Hello"))
;; Checking if the first string is lexically ordered before the second
(string<? "bar" "foo")
;; Checking if the first string is lexically ordered after the second
(st... |
http://rosettacode.org/wiki/String_case | String case | Task
Take the string alphaBETA and demonstrate how to convert it to:
upper-case and
lower-case
Use the default encoding of a string literal or plain ASCII if there is no string literal in your language.
Note: In some languages alphabets toLower and toUpper is not reversable.
Show any additional... | #mIRC_Scripting_Language | mIRC Scripting Language | echo -ag $upper(alphaBETA)
echo -ag $lower(alphaBETA) |
http://rosettacode.org/wiki/String_case | String case | Task
Take the string alphaBETA and demonstrate how to convert it to:
upper-case and
lower-case
Use the default encoding of a string literal or plain ASCII if there is no string literal in your language.
Note: In some languages alphabets toLower and toUpper is not reversable.
Show any additional... | #Modula-3 | Modula-3 | MODULE TextCase EXPORTS Main;
IMPORT IO, Text, ASCII;
PROCEDURE Upper(txt: TEXT): TEXT =
VAR
len := Text.Length(txt);
res := "";
BEGIN
FOR i := 0 TO len - 1 DO
res := Text.Cat(res, Text.FromChar(ASCII.Upper[Text.GetChar(txt, i)]));
END;
RETURN res;
END Upper;
PROCEDURE Lower(txt: T... |
http://rosettacode.org/wiki/String_matching | String matching |
Basic Data Operation
This is a basic data operation. It represents a fundamental action on a basic data type.
You may see other such operations in the Basic Data Operations category, or:
Integer Operations
Arithmetic |
Comparison
Boolean Operations
Bitwise |
Logical
String Operations
Concatenation |
Interpolation |... | #Logo | Logo | to starts.with? :sub :thing
if empty? :sub [output "true]
if empty? :thing [output "false]
if not equal? first :sub first :thing [output "false]
output starts.with? butfirst :sub butfirst :thing
end
to ends.with? :sub :thing
if empty? :sub [output "true]
if empty? :thing [output "false]
if not equal? la... |
http://rosettacode.org/wiki/String_matching | String matching |
Basic Data Operation
This is a basic data operation. It represents a fundamental action on a basic data type.
You may see other such operations in the Basic Data Operations category, or:
Integer Operations
Arithmetic |
Comparison
Boolean Operations
Bitwise |
Logical
String Operations
Concatenation |
Interpolation |... | #Lua | Lua | s1 = "string"
s2 = "str"
s3 = "ing"
s4 = "xyz"
print( "s1 starts with s2: ", string.find( s1, s2 ) == 1 )
print( "s1 starts with s3: ", string.find( s1, s3 ) == 1, "\n" )
print( "s1 contains s3: ", string.find( s1, s3 ) ~= nil )
print( "s1 contains s3: ", string.find( s1, s4 ) ~= nil, "\n" )
print( "s1 ends wi... |
http://rosettacode.org/wiki/String_length | String length | Task
Find the character and byte length of a string.
This means encodings like UTF-8 need to be handled properly, as there is not necessarily a one-to-one relationship between bytes and characters.
By character, we mean an individual Unicode code point, not a user-visible grapheme containing combining characters.
F... | #LabVIEW | LabVIEW |
{script
LAMBDATALK.DICT["W.unicodeLength"] = function() {
function countCodePoints(str) {
var point,
index,
width = 0,
len = 0;
for (index = 0; index < str.length;) {
point = str.codePointAt(index);
width = 0;
while (point) {
width += 1;
point =... |
http://rosettacode.org/wiki/String_concatenation | String concatenation | String concatenation
You are encouraged to solve this task according to the task description, using any language you may know.
Task
Create a string variable equal to any text value.
Create another string variable whose value is the original variable concatenated with another string literal.
To illustrate the operat... | #Picat | Picat | main =>
Hello = "Hello, ",
print(Hello ++ "world!" ++ "\n"),
String = Hello ++ "world!",
String := String ++ "\n",
print(String). |
http://rosettacode.org/wiki/String_concatenation | String concatenation | String concatenation
You are encouraged to solve this task according to the task description, using any language you may know.
Task
Create a string variable equal to any text value.
Create another string variable whose value is the original variable concatenated with another string literal.
To illustrate the operat... | #PicoLisp | PicoLisp | (let Str1 "First text"
(prinl Str1 " literal")
(let Str2 (pack Str1 " literal")
(prinl Str2) ) ) |
http://rosettacode.org/wiki/Sum_multiples_of_3_and_5 | Sum multiples of 3 and 5 | Task
The objective is to write a function that finds the sum of all positive multiples of 3 or 5 below n.
Show output for n = 1000.
This is is the same as Project Euler problem 1.
Extra credit: do this efficiently for n = 1e20 or higher.
| #Scala | Scala | def sum35( max:BigInt ) : BigInt = max match {
// Simplest solution but limited to Ints only
case j if j < 100000 => (1 until j.toInt).filter( i => i % 3 == 0 || i % 5 == 0 ).sum
// Using a custom iterator that takes Longs
case j if j < 10e9.toLong => {
def stepBy( step:Long ) : Iterator[Long] = new Ite... |
http://rosettacode.org/wiki/Sum_digits_of_an_integer | Sum digits of an integer | Task
Take a Natural Number in a given base and return the sum of its digits:
110 sums to 1
123410 sums to 10
fe16 sums to 29
f0e16 sums to 29
| #Swift | Swift |
extension String: Error {
func sumDigits(withBase base: Int) throws -> Int {
func characterToInt(_ base: Int) -> (Character) -> Int? {
return { char in
return Int(String(char), radix: base)
}
}
return try self.map(characterToInt(base))
... |
http://rosettacode.org/wiki/Sum_of_squares | Sum of squares | Task
Write a program to find the sum of squares of a numeric vector.
The program should work on a zero-length vector (with an answer of 0).
Related task
Mean
| #V | V | [sumsq [dup *] map 0 [+] fold].
[] sumsq
=0
[1 2 3] sumsq |
http://rosettacode.org/wiki/Sum_of_squares | Sum of squares | Task
Write a program to find the sum of squares of a numeric vector.
The program should work on a zero-length vector (with an answer of 0).
Related task
Mean
| #VBA | VBA | Public Sub sum_of_squares()
Debug.Print WorksheetFunction.SumSq([{1,2,3,4,5,6,7,8,9,10}])
End Sub |
http://rosettacode.org/wiki/Strip_whitespace_from_a_string/Top_and_tail | Strip whitespace from a string/Top and tail | Task
Demonstrate how to strip leading and trailing whitespace from a string.
The solution should demonstrate how to achieve the following three results:
String with leading whitespace removed
String with trailing whitespace removed
String with both leading and trailing whitespace removed
For the purposes of thi... | #XPL0 | XPL0 | code ChOut=8, CrLf=9, Text=12;
string 0; \use zero-terminated string convention
func StripLead(S0); \Strip leading whitespace (<=$20) from string
char S0;
char S1(80); \BEWARE: very temporary string space returned
int I, J, C, Stripped;
[I:= 0; J:= 0; Stripped:=... |
http://rosettacode.org/wiki/Strip_whitespace_from_a_string/Top_and_tail | Strip whitespace from a string/Top and tail | Task
Demonstrate how to strip leading and trailing whitespace from a string.
The solution should demonstrate how to achieve the following three results:
String with leading whitespace removed
String with trailing whitespace removed
String with both leading and trailing whitespace removed
For the purposes of thi... | #Yabasic | Yabasic | s$ = "\t test \n"
print "--",ltrim$(s$),"--"
print "--",rtrim$(s$),"--"
print "--",trim$(s$),"--" |
http://rosettacode.org/wiki/Substring | Substring |
Basic Data Operation
This is a basic data operation. It represents a fundamental action on a basic data type.
You may see other such operations in the Basic Data Operations category, or:
Integer Operations
Arithmetic |
Comparison
Boolean Operations
Bitwise |
Logical
String Operations
Concatenation |
Interpolation |... | #Nemerle | Nemerle | using System;
using System.Console;
module Substrings
{
Main() : void
{
string s = "0123456789";
def n = 3;
def m = 2;
def c = '3';
def z = "345";
WriteLine(s.Substring(n, m));
WriteLine(s.Substring(n, s.Length - n));
WriteLine(s.Substring(0, s... |
http://rosettacode.org/wiki/Sudoku | Sudoku | Task
Solve a partially filled-in normal 9x9 Sudoku grid and display the result in a human-readable format.
references
Algorithmics of Sudoku may help implement this.
Python Sudoku Solver Computerphile video.
| #SQL | SQL | WITH
symbols (d) AS (SELECT to_char(level) FROM dual CONNECT BY level <= 9)
, board (i) AS (SELECT level FROM dual CONNECT BY level <= 81)
, neighbors (i, j) AS (
SELECT b1.i, b2.i
FROM board b1 INNER JOIN board b2
ON b1.i != b2.i
AND (
MOD(b1.i - b2.i, 9) ... |
http://rosettacode.org/wiki/Substring/Top_and_tail | Substring/Top and tail | The task is to demonstrate how to remove the first and last characters from a string.
The solution should demonstrate how to obtain the following results:
String with first character removed
String with last character removed
String with both the first and last characters removed
If the program uses UTF-8 or UTF... | #SNOBOL4 | SNOBOL4 | "knight" len(1) rem . output ;* strip first character
"socks" rtab(1) . output ;* strip last character
"brooms" len(1) rtab(1) . output ;* strip both first and last characters |
http://rosettacode.org/wiki/Substring/Top_and_tail | Substring/Top and tail | The task is to demonstrate how to remove the first and last characters from a string.
The solution should demonstrate how to obtain the following results:
String with first character removed
String with last character removed
String with both the first and last characters removed
If the program uses UTF-8 or UTF... | #Standard_ML | Standard ML | - val str = "abcde";
val str = "abcde" : string
- String.substring(str, 1, String.size str - 1);
val it = "bcde" : string
- String.substring(str, 0, String.size str - 1);
val it = "abcd" : string
- String.substring(str, 1, String.size str - 2);
val it = "bcd" : string |
http://rosettacode.org/wiki/Sum_and_product_of_an_array | Sum and product of an array | Task
Compute the sum and product of an array of integers.
| #REXX | REXX | /*REXX program adds and multiplies N elements of a (populated) array @. */
numeric digits 200 /*200 decimal digit #s (default is 9).*/
parse arg N .; if N=='' then N=20 /*Not specified? Then use the default.*/
do j=1 for N /*build array of N elements (or 20... |
http://rosettacode.org/wiki/Sum_of_a_series | Sum of a series | Compute the nth term of a series, i.e. the sum of the n first terms of the corresponding sequence.
Informally this value, or its limit when n tends to infinity, is also called the sum of the series, thus the title of this task.
For this task, use:
S
n
=
∑
k
=
1
n
1
k
2
{\displa... | #Nim | Nim | var s = 0.0
for n in 1..1000: s += 1 / (n * n)
echo s |
http://rosettacode.org/wiki/Strip_a_set_of_characters_from_a_string | Strip a set of characters from a string | Task
Create a function that strips a set of characters from a string.
The function should take two arguments:
a string to be stripped
a string containing the set of characters to be stripped
The returned string should contain the first string, stripped of any characters in the second argument:
print str... | #Smalltalk | Smalltalk | | stripChars |
stripChars := [ :string :chars |
string reject: [ :c | chars includes: c ] ].
stripChars
value: 'She was a soul stripper. She took my heart!'
value: 'aei'.
"'Sh ws soul strppr. Sh took my hrt!'" |
http://rosettacode.org/wiki/Strip_a_set_of_characters_from_a_string | Strip a set of characters from a string | Task
Create a function that strips a set of characters from a string.
The function should take two arguments:
a string to be stripped
a string containing the set of characters to be stripped
The returned string should contain the first string, stripped of any characters in the second argument:
print str... | #SNOBOL4 | SNOBOL4 | DEFINE("strip(strip,c)") :(strip_end)
strip strip ANY(c) = :S(strip)F(RETURN)
strip_end
chars = HOST(2, HOST(3)) ;* Get command line argument
chars = IDENT(chars) "aei"
again line = INPUT :F(END)
OUTPUT = strip(line, chars) :(again)
END |
http://rosettacode.org/wiki/String_comparison | String comparison |
Basic Data Operation
This is a basic data operation. It represents a fundamental action on a basic data type.
You may see other such operations in the Basic Data Operations category, or:
Integer Operations
Arithmetic |
Comparison
Boolean Operations
Bitwise |
Logical
String Operations
Concatenation |
Interpolation |... | #Seed7 | Seed7 | $ include "seed7_05.s7i";
const proc: showComparisons (in string: a, in string: b) is func
begin
writeln("compare " <& literal(a) <& " with " <& literal(b) <&":");
writeln("a = b returns: " <& a = b);
writeln("a <> b returns: " <& a <> b);
writeln("a < b returns: " <& a < b);
writeln("a > b r... |
http://rosettacode.org/wiki/String_comparison | String comparison |
Basic Data Operation
This is a basic data operation. It represents a fundamental action on a basic data type.
You may see other such operations in the Basic Data Operations category, or:
Integer Operations
Arithmetic |
Comparison
Boolean Operations
Bitwise |
Logical
String Operations
Concatenation |
Interpolation |... | #Sidef | Sidef | var methods = %w(== != > >= < <= <=>)
for s1, s2 in [<YUP YUP>,<YUP Yup>,<bot bat>,<aaa zz>] {
methods.each{|m| "%s %s %s\t%s\n".printf(s1, m, s2, s1.(m)(s2))}
print "\n"
} |
http://rosettacode.org/wiki/String_case | String case | Task
Take the string alphaBETA and demonstrate how to convert it to:
upper-case and
lower-case
Use the default encoding of a string literal or plain ASCII if there is no string literal in your language.
Note: In some languages alphabets toLower and toUpper is not reversable.
Show any additional... | #MUMPS | MUMPS |
STRCASE(S)
SET UP="ABCDEFGHIJKLMNOPQRSTUVWXYZ"
SET LO="abcdefghijklmnopqrstuvwxyz"
WRITE !,"Given: "_S
WRITE !,"Upper: "_$TRANSLATE(S,LO,UP)
WRITE !,"Lower: "_$TRANSLATE(S,UP,LO)
QUIT
|
http://rosettacode.org/wiki/String_case | String case | Task
Take the string alphaBETA and demonstrate how to convert it to:
upper-case and
lower-case
Use the default encoding of a string literal or plain ASCII if there is no string literal in your language.
Note: In some languages alphabets toLower and toUpper is not reversable.
Show any additional... | #Nanoquery | Nanoquery | string = "alphaBETA"
println upper(string)
println lower(string) |
http://rosettacode.org/wiki/String_matching | String matching |
Basic Data Operation
This is a basic data operation. It represents a fundamental action on a basic data type.
You may see other such operations in the Basic Data Operations category, or:
Integer Operations
Arithmetic |
Comparison
Boolean Operations
Bitwise |
Logical
String Operations
Concatenation |
Interpolation |... | #M2000_Interpreter | M2000 Interpreter |
Module StringMatch {
A$="Hello World"
Print A$ ~ "Hello*"
Print A$ ~ "*llo*"
p=Instr(A$, "llo")
Print p=3
\\ Handle multiple occurance for "o"
p=Instr(A$, "o")
While p > 0 {
Print "position:";p;{ for "o"}
p=Instr(A$, "o", p+1)
}
Print... |
http://rosettacode.org/wiki/String_length | String length | Task
Find the character and byte length of a string.
This means encodings like UTF-8 need to be handled properly, as there is not necessarily a one-to-one relationship between bytes and characters.
By character, we mean an individual Unicode code point, not a user-visible grapheme containing combining characters.
F... | #Lambdatalk | Lambdatalk |
{script
LAMBDATALK.DICT["W.unicodeLength"] = function() {
function countCodePoints(str) {
var point,
index,
width = 0,
len = 0;
for (index = 0; index < str.length;) {
point = str.codePointAt(index);
width = 0;
while (point) {
width += 1;
point =... |
http://rosettacode.org/wiki/String_concatenation | String concatenation | String concatenation
You are encouraged to solve this task according to the task description, using any language you may know.
Task
Create a string variable equal to any text value.
Create another string variable whose value is the original variable concatenated with another string literal.
To illustrate the operat... | #Pike | Pike |
string hello = "hello ";
write(hello + "world" + "\n");
string all_of_it = hello + "world";
write(all_of_it + "\n");
|
http://rosettacode.org/wiki/String_concatenation | String concatenation | String concatenation
You are encouraged to solve this task according to the task description, using any language you may know.
Task
Create a string variable equal to any text value.
Create another string variable whose value is the original variable concatenated with another string literal.
To illustrate the operat... | #PL.2FI | PL/I | declare (s, t) character (30) varying;
s = 'hello from me';
display (s || ' to you.' );
t = s || ' to you all';
display (t); |
http://rosettacode.org/wiki/Sum_multiples_of_3_and_5 | Sum multiples of 3 and 5 | Task
The objective is to write a function that finds the sum of all positive multiples of 3 or 5 below n.
Show output for n = 1000.
This is is the same as Project Euler problem 1.
Extra credit: do this efficiently for n = 1e20 or higher.
| #Scheme | Scheme | (fold (lambda (x tot) (+ tot (if (or (zero? (remainder x 3)) (zero? (remainder x 5))) x 0))) 0 (iota 1000)) |
http://rosettacode.org/wiki/Sum_digits_of_an_integer | Sum digits of an integer | Task
Take a Natural Number in a given base and return the sum of its digits:
110 sums to 1
123410 sums to 10
fe16 sums to 29
f0e16 sums to 29
| #Tcl | Tcl | proc sumDigits {num {base 10}} {
set total 0
foreach d [split $num ""] {
if {[string is alpha $d]} {
set d [expr {[scan [string tolower $d] %c] - 87}]
} elseif {![string is digit $d]} {
error "bad digit: $d"
}
if {$d >= $base} {
error "bad digit: $d"
}
incr total $d
}
return $total
... |
http://rosettacode.org/wiki/Sum_of_squares | Sum of squares | Task
Write a program to find the sum of squares of a numeric vector.
The program should work on a zero-length vector (with an answer of 0).
Related task
Mean
| #VBScript | VBScript |
Function sum_of_squares(arr)
If UBound(arr) = -1 Then
sum_of_squares = 0
End If
For i = 0 To UBound(arr)
sum_of_squares = sum_of_squares + (arr(i)^2)
Next
End Function
WScript.StdOut.WriteLine sum_of_squares(Array(1,2,3,4,5))
WScript.StdOut.WriteLine sum_of_squares(Array())
|
http://rosettacode.org/wiki/Sum_of_squares | Sum of squares | Task
Write a program to find the sum of squares of a numeric vector.
The program should work on a zero-length vector (with an answer of 0).
Related task
Mean
| #Visual_Basic_.NET | Visual Basic .NET |
Private Shared Function sumsq(ByVal i As ICollection(Of Integer)) As Integer
If i Is Nothing OrElse i.Count = 0 Then
Return 0
End If
Return i.[Select](Function(x) x * x).Sum()
End Function
Private Shared Sub Main()
Dim a As Integer() = New Integer() {1, 2, 3, 4, 5}
... |
http://rosettacode.org/wiki/Strip_whitespace_from_a_string/Top_and_tail | Strip whitespace from a string/Top and tail | Task
Demonstrate how to strip leading and trailing whitespace from a string.
The solution should demonstrate how to achieve the following three results:
String with leading whitespace removed
String with trailing whitespace removed
String with both leading and trailing whitespace removed
For the purposes of thi... | #zkl | zkl | "\t\n hoho\n\t\ ".strip() //-->"hoho" |
http://rosettacode.org/wiki/Strip_whitespace_from_a_string/Top_and_tail | Strip whitespace from a string/Top and tail | Task
Demonstrate how to strip leading and trailing whitespace from a string.
The solution should demonstrate how to achieve the following three results:
String with leading whitespace removed
String with trailing whitespace removed
String with both leading and trailing whitespace removed
For the purposes of thi... | #Zoea | Zoea |
program: trim_left
input: ' abcd'
output: 'abcd'
program: trim_right
input: 'abcd '
output: 'abcd'
program: trim
input: ' abcd '
output: 'abcd'
|
http://rosettacode.org/wiki/Substring | Substring |
Basic Data Operation
This is a basic data operation. It represents a fundamental action on a basic data type.
You may see other such operations in the Basic Data Operations category, or:
Integer Operations
Arithmetic |
Comparison
Boolean Operations
Bitwise |
Logical
String Operations
Concatenation |
Interpolation |... | #NetRexx | NetRexx | /* NetRexx */
options replace format comments java crossref savelog symbols
s = 'abcdefghijk'
n = 4
m = 3
say s
say s.substr(n, m)
say s.substr(n)
say s.substr(1, s.length - 1)
say s.substr(s.pos('def'), m)
say s.substr(s.pos('g'), m)
return
|
http://rosettacode.org/wiki/Sudoku | Sudoku | Task
Solve a partially filled-in normal 9x9 Sudoku grid and display the result in a human-readable format.
references
Algorithmics of Sudoku may help implement this.
Python Sudoku Solver Computerphile video.
| #Stata | Stata | mata
function sudoku(a) {
s = J(81,20,.)
t = J(81,3,.)
v = J(81,9,1)
w = J(81,1,0)
for (i=1; i<=9; i++) {
for (j=1; j<=9; j++) {
n = (i-1)*9+j
k = floor((i-1)/3)*3+floor((j-1)/3)+1
t[n,.] = i,j,k
}
}
for (i=1; i<=81; i++) {
for (j=i+1; j<=81; j++) {
if (any(t[i,.]:==t[j,.])) {
w[i]=w[i]+1
... |
http://rosettacode.org/wiki/Substring/Top_and_tail | Substring/Top and tail | The task is to demonstrate how to remove the first and last characters from a string.
The solution should demonstrate how to obtain the following results:
String with first character removed
String with last character removed
String with both the first and last characters removed
If the program uses UTF-8 or UTF... | #Swift | Swift | let txt = "0123456789"
println(dropFirst(txt))
println(dropLast(txt))
println(dropFirst(dropLast(txt))) |
http://rosettacode.org/wiki/Substring/Top_and_tail | Substring/Top and tail | The task is to demonstrate how to remove the first and last characters from a string.
The solution should demonstrate how to obtain the following results:
String with first character removed
String with last character removed
String with both the first and last characters removed
If the program uses UTF-8 or UTF... | #Tcl | Tcl | puts [string range "knight" 1 end]; # strip first character
puts [string range "write" 0 end-1]; # strip last character
puts [string range "brooms" 1 end-1]; # strip both first and last characters |
http://rosettacode.org/wiki/Sum_and_product_of_an_array | Sum and product of an array | Task
Compute the sum and product of an array of integers.
| #Ring | Ring |
aList = 1:10 nSum=0 nProduct=0
for x in aList nSum += x nProduct *= x next
See "Sum = " + nSum + nl
See "Product = " + nProduct + nl
|
http://rosettacode.org/wiki/Sum_of_a_series | Sum of a series | Compute the nth term of a series, i.e. the sum of the n first terms of the corresponding sequence.
Informally this value, or its limit when n tends to infinity, is also called the sum of the series, thus the title of this task.
For this task, use:
S
n
=
∑
k
=
1
n
1
k
2
{\displa... | #Objeck | Objeck |
bundle Default {
class SumSeries {
function : Main(args : String[]) ~ Nil {
DoSumSeries();
}
function : native : DoSumSeries() ~ Nil {
start := 1;
end := 1000;
sum := 0.0;
for(x : Float := start; x <= end; x += 1;) {
sum += f(x);
};
IO.Console->G... |
http://rosettacode.org/wiki/Strip_a_set_of_characters_from_a_string | Strip a set of characters from a string | Task
Create a function that strips a set of characters from a string.
The function should take two arguments:
a string to be stripped
a string containing the set of characters to be stripped
The returned string should contain the first string, stripped of any characters in the second argument:
print str... | #Standard_ML | Standard ML | fun stripchars (string, chars) = let
fun aux c =
if String.isSubstring (str c) chars then
""
else
str c
in
String.translate aux string
end |
http://rosettacode.org/wiki/Strip_a_set_of_characters_from_a_string | Strip a set of characters from a string | Task
Create a function that strips a set of characters from a string.
The function should take two arguments:
a string to be stripped
a string containing the set of characters to be stripped
The returned string should contain the first string, stripped of any characters in the second argument:
print str... | #Swift | Swift | extension String {
func stripCharactersInSet(chars: [Character]) -> String {
return String(seq: filter(self) {find(chars, $0) == nil})
}
}
let aString = "She was a soul stripper. She took my heart!"
let chars: [Character] = ["a", "e", "i"]
println(aString.stripCharactersInSet(chars)) |
http://rosettacode.org/wiki/String_comparison | String comparison |
Basic Data Operation
This is a basic data operation. It represents a fundamental action on a basic data type.
You may see other such operations in the Basic Data Operations category, or:
Integer Operations
Arithmetic |
Comparison
Boolean Operations
Bitwise |
Logical
String Operations
Concatenation |
Interpolation |... | #Smalltalk | Smalltalk | methods := #(= ~= > >= < <= sameAs: ).
#(
('YUP' 'YUP')
('YUP' 'yup')
) pairsDo:[:s1 :s2 |
methods do:[:m |
'%-20s\t%s\n' printf:
{
('(%S %s %S)' printf:{s1 . m . s2}) .
(s1 perform:m with:s2)
} on:Stdout
].
Stdout cr
] |
http://rosettacode.org/wiki/String_case | String case | Task
Take the string alphaBETA and demonstrate how to convert it to:
upper-case and
lower-case
Use the default encoding of a string literal or plain ASCII if there is no string literal in your language.
Note: In some languages alphabets toLower and toUpper is not reversable.
Show any additional... | #Nemerle | Nemerle | using System.Console;
using System.Globalization;
module StringCase
{
Main() : void
{
def alpha = "alphaBETA";
WriteLine(alpha.ToUpper());
WriteLine(alpha.ToLower());
WriteLine(CultureInfo.CurrentCulture.TextInfo.ToTitleCase("exAmpLe sTrinG"));
}
} |
http://rosettacode.org/wiki/String_case | String case | Task
Take the string alphaBETA and demonstrate how to convert it to:
upper-case and
lower-case
Use the default encoding of a string literal or plain ASCII if there is no string literal in your language.
Note: In some languages alphabets toLower and toUpper is not reversable.
Show any additional... | #NetRexx | NetRexx | /* NetRexx */
options replace format comments java crossref savelog symbols
abc = 'alphaBETA'
say abc.upper
say abc.lower
say abc.upper(1, 1) -- capitalize 1st character
|
http://rosettacode.org/wiki/String_matching | String matching |
Basic Data Operation
This is a basic data operation. It represents a fundamental action on a basic data type.
You may see other such operations in the Basic Data Operations category, or:
Integer Operations
Arithmetic |
Comparison
Boolean Operations
Bitwise |
Logical
String Operations
Concatenation |
Interpolation |... | #Maple | Maple |
> with( StringTools ): # bind package exports at the top-level
> s := "dzrIemaWWIMidXYZwGiqkOOn":
> s[1..4]; # pick a prefix
"dzrI"
> IsPrefix( s[ 1 .. 4 ], s ); # check it
true
> s[ -4 .. -1 ]; # pick a suffix
"kO... |
http://rosettacode.org/wiki/String_matching | String matching |
Basic Data Operation
This is a basic data operation. It represents a fundamental action on a basic data type.
You may see other such operations in the Basic Data Operations category, or:
Integer Operations
Arithmetic |
Comparison
Boolean Operations
Bitwise |
Logical
String Operations
Concatenation |
Interpolation |... | #Mathematica.2FWolfram_Language | Mathematica/Wolfram Language | StartWith[x_, y_] := MemberQ[Flatten[StringPosition[x, y]], 1]
EndWith[x_, y_] := MemberQ[Flatten[StringPosition[x, y]], StringLength[x]]
StartWith["XYZaaabXYZaaaaXYZXYZ", "XYZ"]
EndWith["XYZaaabXYZaaaaXYZXYZ", "XYZ"]
StringPosition["XYZaaabXYZaaaaXYZXYZ", "XYZ"] |
http://rosettacode.org/wiki/String_length | String length | Task
Find the character and byte length of a string.
This means encodings like UTF-8 need to be handled properly, as there is not necessarily a one-to-one relationship between bytes and characters.
By character, we mean an individual Unicode code point, not a user-visible grapheme containing combining characters.
F... | #Lasso | Lasso | 'Hello, world!'->size // 13
'møøse'->size // 5
'𝔘𝔫𝔦𝔠𝔬𝔡𝔢'->size // 7 |
http://rosettacode.org/wiki/String_length | String length | Task
Find the character and byte length of a string.
This means encodings like UTF-8 need to be handled properly, as there is not necessarily a one-to-one relationship between bytes and characters.
By character, we mean an individual Unicode code point, not a user-visible grapheme containing combining characters.
F... | #LFE | LFE |
(length "ASCII text")
10
(length "𝔘𝔫𝔦𝔠𝔬𝔡𝔢 𝔗𝔢𝒙𝔱")
12
> (set encoded (binary ("𝔘𝔫𝔦𝔠𝔬𝔡𝔢 𝔗𝔢𝒙𝔱" utf8)))
#B(240 157 148 152 240 157 148 171 240 157 ...)
> (length (unicode:characters_to_list encoded 'utf8))
12
|
http://rosettacode.org/wiki/String_concatenation | String concatenation | String concatenation
You are encouraged to solve this task according to the task description, using any language you may know.
Task
Create a string variable equal to any text value.
Create another string variable whose value is the original variable concatenated with another string literal.
To illustrate the operat... | #Plain_English | Plain English | To run:
Start up.
Put "hello" into a string.
Put the string then " world" into another string.
Write the string to the console.
Write the other string to the console.
Wait for the escape key.
Shut down. |
http://rosettacode.org/wiki/String_concatenation | String concatenation | String concatenation
You are encouraged to solve this task according to the task description, using any language you may know.
Task
Create a string variable equal to any text value.
Create another string variable whose value is the original variable concatenated with another string literal.
To illustrate the operat... | #PowerShell | PowerShell | $s = "Hello"
Write-Host $s World.
# alternative, using variable expansion in strings
Write-Host "$s World."
$s2 = $s + " World."
Write-Host $s2 |
http://rosettacode.org/wiki/String_concatenation | String concatenation | String concatenation
You are encouraged to solve this task according to the task description, using any language you may know.
Task
Create a string variable equal to any text value.
Create another string variable whose value is the original variable concatenated with another string literal.
To illustrate the operat... | #PureBasic | PureBasic | If OpenConsole()
s$ = "hello"
PrintN( s$ + " literal")
s2$ = s$ + " literal"
PrintN(s2$)
Print(#CRLF$ + #CRLF$ + "Press ENTER to exit")
Input()
CloseConsole()
EndIf |
http://rosettacode.org/wiki/Sum_multiples_of_3_and_5 | Sum multiples of 3 and 5 | Task
The objective is to write a function that finds the sum of all positive multiples of 3 or 5 below n.
Show output for n = 1000.
This is is the same as Project Euler problem 1.
Extra credit: do this efficiently for n = 1e20 or higher.
| #Seed7 | Seed7 | $ include "seed7_05.s7i";
include "bigint.s7i";
const func bigInteger: sum35 (in bigInteger: n) is func
result
var bigInteger: sum35 is 0_;
local
const func bigInteger: sumMul (in bigInteger: n, in bigInteger: f) is func
result
var bigInteger: sumMul is 0_;
local
var bigInteg... |
http://rosettacode.org/wiki/Sum_multiples_of_3_and_5 | Sum multiples of 3 and 5 | Task
The objective is to write a function that finds the sum of all positive multiples of 3 or 5 below n.
Show output for n = 1000.
This is is the same as Project Euler problem 1.
Extra credit: do this efficiently for n = 1e20 or higher.
| #Sidef | Sidef | func sumMul(n, f) {
var m = int((n - 1) / f)
f * m * (m + 1) / 2
}
func sum35(n) {
sumMul(n, 3) + sumMul(n, 5) - sumMul(n, 15)
}
for i in (1..20) {
printf("%2s:%22s %s\n", i, 10**i, sum35(10**i))
} |
http://rosettacode.org/wiki/Sum_digits_of_an_integer | Sum digits of an integer | Task
Take a Natural Number in a given base and return the sum of its digits:
110 sums to 1
123410 sums to 10
fe16 sums to 29
f0e16 sums to 29
| #TI-83_BASIC | TI-83 BASIC | "01234567890ABCDEFGHIJKLMNOPQRSTUVWXYZ"→Str1
Disp "SUM DIGITS OF INT"
Disp "-----------------"
Disp "ENTER NUMBER"
Input Str2
Disp "ENTER BASE"
Input B
0→R
length(Str2)→L
For(I,1,L,1)
sub(Str2,I,1)→Str3
inString(Str1,Str3)-1→S
If S≥B or S=-1:Then
Disp "ERROR:"
Disp Str3
Disp "NOT IN BASE"
Disp B
Stop
End
R+S→R
End
Disp... |
http://rosettacode.org/wiki/Sum_of_squares | Sum of squares | Task
Write a program to find the sum of squares of a numeric vector.
The program should work on a zero-length vector (with an answer of 0).
Related task
Mean
| #Wortel | Wortel | @sum !*^@sq [3 1 4 1 5 9] ; returns 133 |
Subsets and Splits
Rosetta Code COBOL Python Hard Tasks
Identifies and retrieves challenging tasks that exist in both COBOL and Python, revealing cross-language programming patterns and difficulty levels for comparative analysis.
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.
Select Specific Languages Codes
Retrieves specific programming language names and codes from training data, providing basic filtering but limited analytical value beyond identifying these particular languages.