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/Guess_the_number | Guess the number | Task
Write a program where the program chooses a number between 1 and 10.
A player is then prompted to enter a guess. If the player guesses wrong, then the prompt appears again until the guess is correct.
When the player has made a successful guess the computer will issue a "Well guessed!" message, a... | #Arturo | Arturo | n: random 1 10
while [notEqual? to :integer input "Guess the number: " n] [
print "Wrong!"
]
print "Well guessed!" |
http://rosettacode.org/wiki/Guess_the_number | Guess the number | Task
Write a program where the program chooses a number between 1 and 10.
A player is then prompted to enter a guess. If the player guesses wrong, then the prompt appears again until the guess is correct.
When the player has made a successful guess the computer will issue a "Well guessed!" message, a... | #AutoHotkey | AutoHotkey | Random, rand, 1, 10 ; This stores a number between 1 and 10 in the var rand using the Mersenne Twister
msgbox I am thinking of a number between 1 and 10.
loop
{
InputBox, guess, Guess the number, Type in a number from 1 to 10
If (guess = rand)
{
msgbox Well Guessed!
Break ; exits loop
}
Else
Msgbox... |
http://rosettacode.org/wiki/Greatest_subsequential_sum | Greatest subsequential sum | Task
Given a sequence of integers, find a continuous subsequence which maximizes the sum of its elements, that is, the elements of no other single subsequence add up to a value larger than this one.
An empty subsequence is considered to have the sum of 0; thus if all elements are negative, the result must be th... | #Arturo | Arturo | subarraySum: function [arr][
curr: 0
mx: 0
fst: size arr
lst: 0
currFst: 0
loop.with: 'i arr [e][
curr: curr + e
if e > curr [
curr: e
currFst: i
]
if curr > mx [
mx: curr
fst: currFst
lst: i
]
... |
http://rosettacode.org/wiki/GUI_enabling/disabling_of_controls | GUI enabling/disabling of controls | In addition to fundamental GUI component interaction, an application should
dynamically enable and disable GUI components, to give some guidance to the
user, and prohibit (inter)actions which are inappropriate in the current state
of the application.
Task
Similar to the task GUI component interaction, write a progr... | #PureBasic | PureBasic | Enumeration
#TextGadget
#AddButton
#SubButton
EndEnumeration
Procedure UpdateGadgets(Value,UpdateValue=0)
Overmax=0: UnderMin=0
If Value>=10
Overmax=1
ElseIf Value<=0
UnderMin=1
EndIf
DisableGadget(#AddButton,Overmax)
DisableGadget(#SubButton,UnderMin)
If UpdateValue
SetGadgetText(#Te... |
http://rosettacode.org/wiki/Guess_the_number/With_feedback | Guess the number/With feedback | Task
Write a game (computer program) that follows the following rules:
The computer chooses a number between given set limits.
The player is asked for repeated guesses until the the target number is guessed correctly
At each guess, the computer responds with whether the guess is:
higher than the target,
equal to... | #BASIC | BASIC | 100 L% = 1
110 U% = 10
120 N% = RND(1) * (U% - L% + 1) + L%
130 PRINT "A NUMBER FROM " L%;
140 PRINT " TO " U%;
150 PRINT ", CALLED A TARGET, HAS BEEN RANDOMLY CHOSEN."
160 FOR Q = 0 TO 1 STEP 0
170 INPUT "GUESS THE TARGET NUMBER: "; G%
180 IF G% < L% OR G% > U% THEN PRINT "THE INPUT WAS INAPPROPRIATE."
190 ... |
http://rosettacode.org/wiki/Greyscale_bars/Display | Greyscale bars/Display | The task is to display a series of vertical greyscale bars (contrast bars) with a sufficient number of bars to span the entire width of the display.
For the top quarter of the display, the left hand bar should be black, and we then incrementally step through six shades of grey until we have a white bar on the right ha... | #EasyLang | EasyLang | n = 8
for row range 4
sz = 100 / n
for i range n
c = i / (n - 1)
if row mod 2 = 1
c = 1 - c
.
color3 c c c
move sz * i row * 25
rect sz + 1 25
.
n *= 2
. |
http://rosettacode.org/wiki/Greyscale_bars/Display | Greyscale bars/Display | The task is to display a series of vertical greyscale bars (contrast bars) with a sufficient number of bars to span the entire width of the display.
For the top quarter of the display, the left hand bar should be black, and we then incrementally step through six shades of grey until we have a white bar on the right ha... | #Euler_Math_Toolbox | Euler Math Toolbox |
>function grayscale(y1,y2,n,direction=1) ...
$ loop 0 to n-1;
$ s=#/(n-1); barcolor(rgb(s,s,s));
$ if direction==1 then plotbar(#/n,y1,1/n,y2-y1);
$ else plotbar(1-(#+1)/n,y1,1/n,y2-y1);
$ endif;
$ end;
$endfunction
>function grayscales () ...
$ aspect(2); barstyle("#");
$ window(0,0,1023,1023); margin(0); s... |
http://rosettacode.org/wiki/Greyscale_bars/Display | Greyscale bars/Display | The task is to display a series of vertical greyscale bars (contrast bars) with a sufficient number of bars to span the entire width of the display.
For the top quarter of the display, the left hand bar should be black, and we then incrementally step through six shades of grey until we have a white bar on the right ha... | #FreeBASIC | FreeBASIC | ' version 01-09-2017
' compile with: fbc -s console
' or compile with: fbc -s gui
' hit any key to stop
Dim As UInteger d, blocks, blocksize, ps, col, h, w, x, y1, y2
ScreenInfo w, h
' create display size window, 8bit color (palette), no frame
ScreenRes w, h, 8,, 8
For x = 0 To 255 ' create grayscale pa... |
http://rosettacode.org/wiki/Guess_the_number/With_feedback_(player) | Guess the number/With feedback (player) | Task
Write a player for the game that follows the following rules:
The scorer will choose a number between set limits. The computer player will print a guess of the target number. The computer asks for a score of whether its guess is higher than, lower than, or equal to the target. The computer guesses, and the score... | #FreeBASIC | FreeBASIC | ' FB 1.05.0 Win64
Dim hle As String
Dim lowest As Integer = 1
Dim highest As Integer = 20
Dim guess As Integer = 10
Print "Please choose a number between 1 and 20 but don't tell me what it is yet"
Print
Do
Print "My guess is"; guess
Do
Input "Is this higher/lower or equal to your chosen number h/l/e : "; hle
... |
http://rosettacode.org/wiki/Happy_numbers | Happy numbers | From Wikipedia, the free encyclopedia:
A happy number is defined by the following process:
Starting with any positive integer, replace the number by the sum of the squares of its digits, and repeat the process until the number equals 1 (where it will stay), or it loops endlessly in a cycle which does not inclu... | #CLU | CLU | sum_dig_sq = proc (n: int) returns (int)
sum_sq: int := 0
while n > 0 do
sum_sq := sum_sq + (n // 10) ** 2
n := n / 10
end
return (sum_sq)
end sum_dig_sq
is_happy = proc (n: int) returns (bool)
nn: int := sum_dig_sq(n)
while nn ~= n cand nn ~= 1 do
n := sum_dig_sq(n)
... |
http://rosettacode.org/wiki/Haversine_formula | Haversine formula |
This page uses content from Wikipedia. The original article was at Haversine formula. The list of authors can be seen in the page history. As with Rosetta Code, the text of Wikipedia is available under the GNU FDL. (See links for details on variance)
The haversine formula is an equation important in navigation, g... | #J | J | require 'trig'
haversin=: 0.5 * 1 - cos
Rearth=: 6372.8
haversineDist=: Rearth * haversin^:_1@((1 , *&(cos@{.)) +/ .* [: haversin -)&rfd
|
http://rosettacode.org/wiki/Hello_world/Newline_omission | Hello world/Newline omission | Some languages automatically insert a newline after outputting a string, unless measures are taken to prevent its output.
Task
Display the string Goodbye, World! without a trailing newline.
Related tasks
Hello world/Graphical
Hello world/Line Printer
Hello world/Standard error
Hello world/Text
| #Verbexx | Verbexx | @STDOUT "Goodbye, World!"; |
http://rosettacode.org/wiki/Hello_world/Newline_omission | Hello world/Newline omission | Some languages automatically insert a newline after outputting a string, unless measures are taken to prevent its output.
Task
Display the string Goodbye, World! without a trailing newline.
Related tasks
Hello world/Graphical
Hello world/Line Printer
Hello world/Standard error
Hello world/Text
| #Verilog | Verilog | module main;
initial
begin
$write("Goodbye, World!");
$finish ;
end
endmodule |
http://rosettacode.org/wiki/Hello_world/Newline_omission | Hello world/Newline omission | Some languages automatically insert a newline after outputting a string, unless measures are taken to prevent its output.
Task
Display the string Goodbye, World! without a trailing newline.
Related tasks
Hello world/Graphical
Hello world/Line Printer
Hello world/Standard error
Hello world/Text
| #Vim_Script | Vim Script | echon "Goodbye, World!" |
http://rosettacode.org/wiki/Hello_world/Newline_omission | Hello world/Newline omission | Some languages automatically insert a newline after outputting a string, unless measures are taken to prevent its output.
Task
Display the string Goodbye, World! without a trailing newline.
Related tasks
Hello world/Graphical
Hello world/Line Printer
Hello world/Standard error
Hello world/Text
| #Visual_Basic_.NET | Visual Basic .NET | Module Module1
Sub Main()
Console.Write("Goodbye, World!")
End Sub
End Module |
http://rosettacode.org/wiki/Hello_world/Text | Hello world/Text | Hello world/Text is part of Short Circuit's Console Program Basics selection.
Task
Display the string Hello world! on a text console.
Related tasks
Hello world/Graphical
Hello world/Line Printer
Hello world/Newbie
Hello world/Newline omission
Hello world/Standard error
Hello world/Web server
| #Frege | Frege | module HelloWorld where
main _ = println "Hello world!" |
http://rosettacode.org/wiki/Hash_from_two_arrays | Hash from two arrays | Task
Using two Arrays of equal length, create a Hash object
where the elements from one array (the keys) are linked
to the elements of the other (the values)
Related task
Associative arrays/Creation
| #Scheme | Scheme | (define (lists->hash-table keys values . rest)
(apply alist->hash-table (map cons keys values) rest)) |
http://rosettacode.org/wiki/Hash_from_two_arrays | Hash from two arrays | Task
Using two Arrays of equal length, create a Hash object
where the elements from one array (the keys) are linked
to the elements of the other (the values)
Related task
Associative arrays/Creation
| #Seed7 | Seed7 | $ include "seed7_05.s7i";
const type: numericHash is hash [string] integer;
var numericHash: myHash is numericHash.value;
const proc: main is func
local
var array string: keyList is [] ("one", "two", "three");
var array integer: valueList is [] (1, 2, 3);
var integer: number is 0;
begin
for numb... |
http://rosettacode.org/wiki/Harshad_or_Niven_series | Harshad or Niven series | The Harshad or Niven numbers are positive integers ≥ 1 that are divisible by the sum of their digits.
For example, 42 is a Harshad number as 42 is divisible by (4 + 2) without remainder.
Assume that the series is defined as the numbers in increasing order.
Task
The task is to create a function/method/... | #Mathematica_.2F_Wolfram_Language | Mathematica / Wolfram Language | nextHarshad =
NestWhile[# + 1 &, # + 1, ! Divisible[#, Total@IntegerDigits@#] &] &;
Print@Rest@NestList[nextHarshad, 0, 20];
Print@nextHarshad@1000; |
http://rosettacode.org/wiki/Hello_world/Graphical | Hello world/Graphical |
Task
Display the string Goodbye, World! on a GUI object (alert box, plain window, text area, etc.).
Related task
Hello world/Text
| #Gambas | Gambas | Message.Info("Goodbye, World!") ' Display a simple message box |
http://rosettacode.org/wiki/Hello_world/Graphical | Hello world/Graphical |
Task
Display the string Goodbye, World! on a GUI object (alert box, plain window, text area, etc.).
Related task
Hello world/Text
| #Genie | Genie | [indent=4]
/*
Genie GTK+ hello
valac --pkg gtk+-3.0 hello-gtk.gs
./hello-gtk
*/
uses Gtk
init
Gtk.init (ref args)
var window = new Window (WindowType.TOPLEVEL)
var label = new Label("Goodbye, World!")
window.add(label)
window.set_default_size(160, 100)
window.show_all()
window.destro... |
http://rosettacode.org/wiki/GUI_component_interaction | GUI component interaction |
Almost every application needs to communicate with the user in some way.
Therefore, a substantial part of the code deals with the interaction
of program logic with GUI components.
Typically, the following is needed:
put values into input fields under program control
read and check input from the user
pop up dial... | #Icon_and_Unicon | Icon and Unicon |
import gui
$include "guih.icn"
# Provides a basic message dialog
class MessageDialog : Dialog (message)
method component_setup ()
label := Label ("label="||message, "pos=20,20")
add (label)
button := TextButton("label=OK", "pos=100,60")
button.connect (self, "dispose", ACTION_EVENT)
add (butto... |
http://rosettacode.org/wiki/Hamming_numbers | Hamming numbers | Hamming numbers are numbers of the form
H = 2i × 3j × 5k
where
i, j, k ≥ 0
Hamming numbers are also known as ugly numbers and also 5-smooth numbers (numbers whose prime divisors are less or equal to 5).
Task
Generate the sequence of Hamming numbers, in increasing order. In ... | #Arturo | Arturo | hamming: function [limit][
if limit=1 -> return 1
h: map 0..limit-1 'z -> 1
x2: 2, x3: 3, x5: 5
i: 0, j: 0, k: 0
loop 1..limit-1 'n [
set h n min @[x2 x3 x5]
if x2 = h\[n] [
i: i + 1
x2: 2 * h\[i]
]
if x3 = h\[n] [
j: j + 1
... |
http://rosettacode.org/wiki/Guess_the_number | Guess the number | Task
Write a program where the program chooses a number between 1 and 10.
A player is then prompted to enter a guess. If the player guesses wrong, then the prompt appears again until the guess is correct.
When the player has made a successful guess the computer will issue a "Well guessed!" message, a... | #AutoIt | AutoIt |
$irnd = Random(1, 10, 1)
$iinput = -1
While $input <> $irnd
$iinput = InputBox("Choose a number", "Please chosse a Number between 1 and 10")
WEnd
MsgBox(0, "Success", "Well guessed!")
|
http://rosettacode.org/wiki/Guess_the_number | Guess the number | Task
Write a program where the program chooses a number between 1 and 10.
A player is then prompted to enter a guess. If the player guesses wrong, then the prompt appears again until the guess is correct.
When the player has made a successful guess the computer will issue a "Well guessed!" message, a... | #AWK | AWK |
# syntax: GAWK -f GUESS_THE_NUMBER.AWK
BEGIN {
srand()
n = int(rand() * 10) + 1
print("I am thinking of a number between 1 and 10. Try to guess it.")
while (1) {
getline ans
if (ans !~ /^[0-9]+$/) {
print("Your input was not a number. Try again.")
continue
}
if ... |
http://rosettacode.org/wiki/Greatest_subsequential_sum | Greatest subsequential sum | Task
Given a sequence of integers, find a continuous subsequence which maximizes the sum of its elements, that is, the elements of no other single subsequence add up to a value larger than this one.
An empty subsequence is considered to have the sum of 0; thus if all elements are negative, the result must be th... | #ATS | ATS |
(*
** This one is
** translated into ATS from the Ocaml entry
*)
(* ****** ****** *)
//
// How to compile:
// patscc -DATS_MEMALLOC_LIBC -o maxsubseq maxsubseq.dats
//
(* ****** ****** *)
//
#include
"share/atspre_staload.hats"
//
(* ****** ****** *)
typedef ints = List0(int)
(* ****** ****** *)
fun
maxsubseq... |
http://rosettacode.org/wiki/Greatest_subsequential_sum | Greatest subsequential sum | Task
Given a sequence of integers, find a continuous subsequence which maximizes the sum of its elements, that is, the elements of no other single subsequence add up to a value larger than this one.
An empty subsequence is considered to have the sum of 0; thus if all elements are negative, the result must be th... | #AutoHotkey | AutoHotkey | seq = -1,-2,3,5,6,-2,-1,4,-4,2,-1
max := sum := start := 0
Loop Parse, seq, `,
If (max < sum+=A_LoopField)
max := sum, a := start, b := A_Index
Else If sum <= 0
sum := 0, start := A_Index
; read out the best subsequence
Loop Parse, seq, `,
s .= A_Index > a && A_Index <= b ? A_LoopField "," : ""
Msg... |
http://rosettacode.org/wiki/GUI_enabling/disabling_of_controls | GUI enabling/disabling of controls | In addition to fundamental GUI component interaction, an application should
dynamically enable and disable GUI components, to give some guidance to the
user, and prohibit (inter)actions which are inappropriate in the current state
of the application.
Task
Similar to the task GUI component interaction, write a progr... | #Python | Python |
#!/usr/bin/env python3
import tkinter as tk
class MyForm(tk.Frame):
def __init__(self, master=None):
tk.Frame.__init__(self, master)
self.pack(expand=True, fill="both", padx=10, pady=10)
self.master.title("Controls")
self.setupUI()
def setupUI(self):
self.value_... |
http://rosettacode.org/wiki/Guess_the_number/With_feedback | Guess the number/With feedback | Task
Write a game (computer program) that follows the following rules:
The computer chooses a number between given set limits.
The player is asked for repeated guesses until the the target number is guessed correctly
At each guess, the computer responds with whether the guess is:
higher than the target,
equal to... | #Batch_File | Batch File | @echo off
:A
set /a number=%random% %% 10 + 1
:B
set /p guess=Choose a number between 1 and 10:
if %guess equ %number% goto win
if %guess% gtr 10 msg * "Number must be between 1 and 10."
if %guess% leq 0 msg * "Number must be between 1 and 10."
if %guess% gtr %number% echo Higher!
if %guess% lss %number% echo Lower!... |
http://rosettacode.org/wiki/Greyscale_bars/Display | Greyscale bars/Display | The task is to display a series of vertical greyscale bars (contrast bars) with a sufficient number of bars to span the entire width of the display.
For the top quarter of the display, the left hand bar should be black, and we then incrementally step through six shades of grey until we have a white bar on the right ha... | #Frink | Frink |
fakewidth =!= dummy
g = new graphics
g.antialiased[false]
drawBars[g, 0, 1, 0, 1/4, 8]
drawBars[g, 1, 0, 1/4, 1/2, 16]
drawBars[g, 0, 1, 1/2, 3/4, 32]
drawBars[g, 1, 0, 3/4, 1, 64]
g.show[640,480,1] // No portable fullscreen mode; user must maximize window.
drawBars[g is graphics, leftColor, rightColor, top, bot... |
http://rosettacode.org/wiki/Greyscale_bars/Display | Greyscale bars/Display | The task is to display a series of vertical greyscale bars (contrast bars) with a sufficient number of bars to span the entire width of the display.
For the top quarter of the display, the left hand bar should be black, and we then incrementally step through six shades of grey until we have a white bar on the right ha... | #Gambas | Gambas | Public Sub Form_Open()
Dim iRow, iCol, iClr As Integer 'For Row, Column and Colour
Dim iInc As Integer = 4 'To calculate RGB colour
Dim h1Panel As Panel 'Panels to display colours
With Me ... |
http://rosettacode.org/wiki/Guess_the_number/With_feedback_(player) | Guess the number/With feedback (player) | Task
Write a player for the game that follows the following rules:
The scorer will choose a number between set limits. The computer player will print a guess of the target number. The computer asks for a score of whether its guess is higher than, lower than, or equal to the target. The computer guesses, and the score... | #Go | Go | package main
import (
"fmt"
"sort"
)
func main() {
lower, upper := 0, 100
fmt.Printf(`Instructions:
Think of integer number from %d (inclusive) to %d (exclusive) and
I will guess it. After each guess, I will ask you if it is less than
or equal to some number, and you will respond with "yes" or "no".... |
http://rosettacode.org/wiki/Happy_numbers | Happy numbers | From Wikipedia, the free encyclopedia:
A happy number is defined by the following process:
Starting with any positive integer, replace the number by the sum of the squares of its digits, and repeat the process until the number equals 1 (where it will stay), or it loops endlessly in a cycle which does not inclu... | #CoffeeScript | CoffeeScript | happy = (n) ->
seen = {}
while true
n = sum_digit_squares(n)
return true if n == 1
return false if seen[n]
seen[n] = true
sum_digit_squares = (n) ->
sum = 0
for c in n.toString()
d = parseInt(c)
sum += d*d
sum
i = 1
cnt = 0
while cnt < 8
if happy(i)
console.log i
cnt += 1... |
http://rosettacode.org/wiki/Haversine_formula | Haversine formula |
This page uses content from Wikipedia. The original article was at Haversine formula. The list of authors can be seen in the page history. As with Rosetta Code, the text of Wikipedia is available under the GNU FDL. (See links for details on variance)
The haversine formula is an equation important in navigation, g... | #Java | Java | public class Haversine {
public static final double R = 6372.8; // In kilometers
public static double haversine(double lat1, double lon1, double lat2, double lon2) {
double dLat = Math.toRadians(lat2 - lat1);
double dLon = Math.toRadians(lon2 - lon1);
lat1 = Math.toRadians(lat1);
... |
http://rosettacode.org/wiki/Hello_world/Newline_omission | Hello world/Newline omission | Some languages automatically insert a newline after outputting a string, unless measures are taken to prevent its output.
Task
Display the string Goodbye, World! without a trailing newline.
Related tasks
Hello world/Graphical
Hello world/Line Printer
Hello world/Standard error
Hello world/Text
| #Vlang | Vlang | fn main() { print("Goodbye, World!") } |
http://rosettacode.org/wiki/Hello_world/Newline_omission | Hello world/Newline omission | Some languages automatically insert a newline after outputting a string, unless measures are taken to prevent its output.
Task
Display the string Goodbye, World! without a trailing newline.
Related tasks
Hello world/Graphical
Hello world/Line Printer
Hello world/Standard error
Hello world/Text
| #Web_68 | Web 68 | @ @a@=#!/usr/bin/a68g -nowarn@>@\BEGIN print("Hello World") END |
http://rosettacode.org/wiki/Hello_world/Newline_omission | Hello world/Newline omission | Some languages automatically insert a newline after outputting a string, unless measures are taken to prevent its output.
Task
Display the string Goodbye, World! without a trailing newline.
Related tasks
Hello world/Graphical
Hello world/Line Printer
Hello world/Standard error
Hello world/Text
| #Wren | Wren | System.write("Goodbye, World!") |
http://rosettacode.org/wiki/Hello_world/Newline_omission | Hello world/Newline omission | Some languages automatically insert a newline after outputting a string, unless measures are taken to prevent its output.
Task
Display the string Goodbye, World! without a trailing newline.
Related tasks
Hello world/Graphical
Hello world/Line Printer
Hello world/Standard error
Hello world/Text
| #XLISP | XLISP | (display "Goodbye, World!") |
http://rosettacode.org/wiki/Hello_world/Text | Hello world/Text | Hello world/Text is part of Short Circuit's Console Program Basics selection.
Task
Display the string Hello world! on a text console.
Related tasks
Hello world/Graphical
Hello world/Line Printer
Hello world/Newbie
Hello world/Newline omission
Hello world/Standard error
Hello world/Web server
| #friendly_interactive_shell | friendly interactive shell | echo Hello world! |
http://rosettacode.org/wiki/Hash_from_two_arrays | Hash from two arrays | Task
Using two Arrays of equal length, create a Hash object
where the elements from one array (the keys) are linked
to the elements of the other (the values)
Related task
Associative arrays/Creation
| #SenseTalk | SenseTalk |
set keyList to ["red", "green", "blue"]
set valueList to [150,0,128]
repeat with n=1 to the number of items in keyList
set map.(item n of keyList) to item n of valueList
end repeat
put map
--> (blue:"128", green:"0", red:"150")
|
http://rosettacode.org/wiki/Hash_from_two_arrays | Hash from two arrays | Task
Using two Arrays of equal length, create a Hash object
where the elements from one array (the keys) are linked
to the elements of the other (the values)
Related task
Associative arrays/Creation
| #Sidef | Sidef | var keys = %w(a b c)
var vals = [1, 2, 3]
var hash = Hash()
hash{keys...} = vals...
say hash |
http://rosettacode.org/wiki/Harshad_or_Niven_series | Harshad or Niven series | The Harshad or Niven numbers are positive integers ≥ 1 that are divisible by the sum of their digits.
For example, 42 is a Harshad number as 42 is divisible by (4 + 2) without remainder.
Assume that the series is defined as the numbers in increasing order.
Task
The task is to create a function/method/... | #MAD | MAD | NORMAL MODE IS INTEGER
INTERNAL FUNCTION(A,B)
ENTRY TO REM.
FUNCTION RETURN A-A/B*B
END OF FUNCTION
INTERNAL FUNCTION(I)
ENTRY TO DSUM.
SUM = 0
REST = I
DIGIT WHENEVER REST.NE.0
SUM = S... |
http://rosettacode.org/wiki/Hello_world/Graphical | Hello world/Graphical |
Task
Display the string Goodbye, World! on a GUI object (alert box, plain window, text area, etc.).
Related task
Hello world/Text
| #GlovePIE | GlovePIE | debug="⡧⢼⣟⣋⣇⣀⣇⣀⣏⣹⠀⠀⣇⣼⣏⣹⡯⡽⣇⣀⣏⡱⢘⠀" |
http://rosettacode.org/wiki/Hello_world/Graphical | Hello world/Graphical |
Task
Display the string Goodbye, World! on a GUI object (alert box, plain window, text area, etc.).
Related task
Hello world/Text
| #GML | GML | draw_text(0,0,"Goodbye World!"); |
http://rosettacode.org/wiki/GUI_component_interaction | GUI component interaction |
Almost every application needs to communicate with the user in some way.
Therefore, a substantial part of the code deals with the interaction
of program logic with GUI components.
Typically, the following is needed:
put values into input fields under program control
read and check input from the user
pop up dial... | #J | J | INTERACT=: noun define
pc interact;
cc Value edit center;
cc increment button;cn "Increment";
cc random button;cn "Random";
pas 6 6;pcenter;
)
interact_run=: verb define
wd INTERACT
wd 'set Value text 0;'
wd 'pshow;'
)
interact_cancel=: interact_close=: verb define
wd'pclose'
)
interact_Value_button=: verb de... |
http://rosettacode.org/wiki/GUI_component_interaction | GUI component interaction |
Almost every application needs to communicate with the user in some way.
Therefore, a substantial part of the code deals with the interaction
of program logic with GUI components.
Typically, the following is needed:
put values into input fields under program control
read and check input from the user
pop up dial... | #Java | Java | import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.KeyEvent;
import java.awt.event.KeyListener;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.JTextField;
pub... |
http://rosettacode.org/wiki/Hamming_numbers | Hamming numbers | Hamming numbers are numbers of the form
H = 2i × 3j × 5k
where
i, j, k ≥ 0
Hamming numbers are also known as ugly numbers and also 5-smooth numbers (numbers whose prime divisors are less or equal to 5).
Task
Generate the sequence of Hamming numbers, in increasing order. In ... | #ATS | ATS |
//
// How to compile:
// patscc -DATS_MEMALLOC_LIBC -o hamming hamming.dats
//
#include
"share/atspre_staload.hats"
fun
min3
(
A: arrayref(int, 3)
) : natLt(3) = i where
{
var x: int = A[0]
var i: natLt(3) = 0
val () = if A[1] < x then (x := A[1]; i := 1)
val () = if A[2] < x then (x := A[2]; i := 2)
} (*... |
http://rosettacode.org/wiki/Guess_the_number | Guess the number | Task
Write a program where the program chooses a number between 1 and 10.
A player is then prompted to enter a guess. If the player guesses wrong, then the prompt appears again until the guess is correct.
When the player has made a successful guess the computer will issue a "Well guessed!" message, a... | #BASIC | BASIC | 10 N% = RND(1) * 10 + 1
20 PRINT "A NUMBER FROM 1 ";
30 PRINT "TO 10 HAS BEEN ";
40 PRINT "RANDOMLY CHOSEN."
50 FOR Q = 0 TO 1 STEP 0
60 INPUT "ENTER A GUESS. "; G%
70 Q = G% = N%
80 NEXT
90 PRINT "WELL GUESSED!" |
http://rosettacode.org/wiki/Guess_the_number | Guess the number | Task
Write a program where the program chooses a number between 1 and 10.
A player is then prompted to enter a guess. If the player guesses wrong, then the prompt appears again until the guess is correct.
When the player has made a successful guess the computer will issue a "Well guessed!" message, a... | #BASIC256 | BASIC256 | n = int(rand * 10) + 1
print "I am thinking of a number from 1 to 10"
do
input "Guess it > ",g
if g <> n then
print "No luck, Try again."
endif
until g = n
print "Yea! You guessed my number." |
http://rosettacode.org/wiki/Greatest_subsequential_sum | Greatest subsequential sum | Task
Given a sequence of integers, find a continuous subsequence which maximizes the sum of its elements, that is, the elements of no other single subsequence add up to a value larger than this one.
An empty subsequence is considered to have the sum of 0; thus if all elements are negative, the result must be th... | #AutoIt | AutoIt |
Local $iArray[11] = [-1, -2, 3, 5, 6, -2, -1, 4, -4, 2, -1]
GREAT_SUB($iArray)
Local $iArray[5] = [-1, -2, -3, -4, -5]
GREAT_SUB($iArray)
Local $iArray[15] = [7, -6, -8, 5, -2, -6, 7, 4, 8, -9, -3, 2, 6, -4, -6]
GREAT_SUB($iArray)
Func GREAT_SUB($iArray)
Local $iSUM = 0, $iBEGIN_MAX = 0, $iEND_MAX = -1, $iMAX_SUM ... |
http://rosettacode.org/wiki/GUI_enabling/disabling_of_controls | GUI enabling/disabling of controls | In addition to fundamental GUI component interaction, an application should
dynamically enable and disable GUI components, to give some guidance to the
user, and prohibit (inter)actions which are inappropriate in the current state
of the application.
Task
Similar to the task GUI component interaction, write a progr... | #R | R |
library(gWidgets)
options(guiToolkit="RGtk2") ## using gWidgtsRGtk2
w <- gwindow("Disable components")
g <- ggroup(cont=w, horizontal=FALSE)
e <- gedit("0", cont=g, coerce.with=as.numeric)
bg <- ggroup(cont=g)
down_btn <- gbutton("-", cont=bg)
up_btn <- gbutton("+", cont=bg)
update_ctrls <- function(h,...) {
... |
http://rosettacode.org/wiki/Guess_the_number/With_feedback | Guess the number/With feedback | Task
Write a game (computer program) that follows the following rules:
The computer chooses a number between given set limits.
The player is asked for repeated guesses until the the target number is guessed correctly
At each guess, the computer responds with whether the guess is:
higher than the target,
equal to... | #BBC_BASIC | BBC BASIC | Min% = 1
Max% = 10
chosen% = RND(Max%-Min%+1) + Min% - 1
REPEAT
PRINT "Guess a number between "; Min% " and " ;Max% ;
INPUT ": " guess%
CASE TRUE OF
WHEN guess% < Min% OR guess% > Max%:
PRINT "That was an invalid number"
WHEN guess% < chose... |
http://rosettacode.org/wiki/Greyscale_bars/Display | Greyscale bars/Display | The task is to display a series of vertical greyscale bars (contrast bars) with a sufficient number of bars to span the entire width of the display.
For the top quarter of the display, the left hand bar should be black, and we then incrementally step through six shades of grey until we have a white bar on the right ha... | #Go | Go | package main
import (
"github.com/fogleman/gg"
"math"
)
func greyBars(dc *gg.Context) {
run := 0
colorComp := 0.0 // component of the color
for colCount := 8; colCount < 128; colCount *= 2 {
// by this gap we change the background color
colorGap := 255.0 / float64(colCount-1)
... |
http://rosettacode.org/wiki/Greyscale_bars/Display | Greyscale bars/Display | The task is to display a series of vertical greyscale bars (contrast bars) with a sufficient number of bars to span the entire width of the display.
For the top quarter of the display, the left hand bar should be black, and we then incrementally step through six shades of grey until we have a white bar on the right ha... | #Haskell | Haskell | import Graphics.UI.Gtk
import Graphics.UI.Gtk.Gdk.GC
import Control.Monad.Trans (liftIO)
-- click on the window to exit.
main = do
initGUI
window <- windowNew
buf <- pixbufNewFromXPMData bars
widgetAddEvents window [ButtonPressMask]
on window objectDestroy mainQuit
on window exposeEven... |
http://rosettacode.org/wiki/Guess_the_number/With_feedback_(player) | Guess the number/With feedback (player) | Task
Write a player for the game that follows the following rules:
The scorer will choose a number between set limits. The computer player will print a guess of the target number. The computer asks for a score of whether its guess is higher than, lower than, or equal to the target. The computer guesses, and the score... | #Haskell | Haskell |
main :: IO ()
main = do
putStrLn "Please enter the range:"
putStr "From: "
from <- getLine
putStr "To: "
to <- getLine
case (from, to) of
(_) | [(from', "")] <- reads from
, [(to' , "")] <- reads to
, from' < to' -> loop from' to'
(_)... |
http://rosettacode.org/wiki/Happy_numbers | Happy numbers | From Wikipedia, the free encyclopedia:
A happy number is defined by the following process:
Starting with any positive integer, replace the number by the sum of the squares of its digits, and repeat the process until the number equals 1 (where it will stay), or it loops endlessly in a cycle which does not inclu... | #Common_Lisp | Common Lisp | (defun sqr (n)
(* n n))
(defun sum-of-sqr-dgts (n)
(loop for i = n then (floor i 10)
while (plusp i)
sum (sqr (mod i 10))))
(defun happy-p (n &optional cache)
(or (= n 1)
(unless (find n cache)
(happy-p (sum-of-sqr-dgts n)
(cons n cache)))))
(defun happys (&au... |
http://rosettacode.org/wiki/Haversine_formula | Haversine formula |
This page uses content from Wikipedia. The original article was at Haversine formula. The list of authors can be seen in the page history. As with Rosetta Code, the text of Wikipedia is available under the GNU FDL. (See links for details on variance)
The haversine formula is an equation important in navigation, g... | #JavaScript | JavaScript | function haversine() {
var radians = Array.prototype.map.call(arguments, function(deg) { return deg/180.0 * Math.PI; });
var lat1 = radians[0], lon1 = radians[1], lat2 = radians[2], lon2 = radians[3];
var R = 6372.8; // km
var dLat = lat2 - lat1;
var dLon = lon2 - lon1;
var a =... |
http://rosettacode.org/wiki/Hello_world/Newline_omission | Hello world/Newline omission | Some languages automatically insert a newline after outputting a string, unless measures are taken to prevent its output.
Task
Display the string Goodbye, World! without a trailing newline.
Related tasks
Hello world/Graphical
Hello world/Line Printer
Hello world/Standard error
Hello world/Text
| #XPath | XPath | 'Goodbye, World!' |
http://rosettacode.org/wiki/Hello_world/Newline_omission | Hello world/Newline omission | Some languages automatically insert a newline after outputting a string, unless measures are taken to prevent its output.
Task
Display the string Goodbye, World! without a trailing newline.
Related tasks
Hello world/Graphical
Hello world/Line Printer
Hello world/Standard error
Hello world/Text
| #XPL0 | XPL0 | code Text=12;
Text(0, "Goodbye, World!") |
http://rosettacode.org/wiki/Hello_world/Newline_omission | Hello world/Newline omission | Some languages automatically insert a newline after outputting a string, unless measures are taken to prevent its output.
Task
Display the string Goodbye, World! without a trailing newline.
Related tasks
Hello world/Graphical
Hello world/Line Printer
Hello world/Standard error
Hello world/Text
| #XSLT | XSLT | <xsl:text>Goodbye, World!</xsl:text> |
http://rosettacode.org/wiki/Hello_world/Newline_omission | Hello world/Newline omission | Some languages automatically insert a newline after outputting a string, unless measures are taken to prevent its output.
Task
Display the string Goodbye, World! without a trailing newline.
Related tasks
Hello world/Graphical
Hello world/Line Printer
Hello world/Standard error
Hello world/Text
| #zkl | zkl | print("Goodbye, World!");
Console.write("Goodbye, World!"); |
http://rosettacode.org/wiki/Hello_world/Newline_omission | Hello world/Newline omission | Some languages automatically insert a newline after outputting a string, unless measures are taken to prevent its output.
Task
Display the string Goodbye, World! without a trailing newline.
Related tasks
Hello world/Graphical
Hello world/Line Printer
Hello world/Standard error
Hello world/Text
| #Zig | Zig | const std = @import("std");
pub fn main() !void {
try std.io.getStdOut().writer().writeAll("Hello world!");
} |
http://rosettacode.org/wiki/Hello_world/Text | Hello world/Text | Hello world/Text is part of Short Circuit's Console Program Basics selection.
Task
Display the string Hello world! on a text console.
Related tasks
Hello world/Graphical
Hello world/Line Printer
Hello world/Newbie
Hello world/Newline omission
Hello world/Standard error
Hello world/Web server
| #Frink | Frink |
println["Hello world!"]
|
http://rosettacode.org/wiki/Hash_from_two_arrays | Hash from two arrays | Task
Using two Arrays of equal length, create a Hash object
where the elements from one array (the keys) are linked
to the elements of the other (the values)
Related task
Associative arrays/Creation
| #Smalltalk | Smalltalk | Array extend [
dictionaryWithValues: array [ |d|
d := Dictionary new.
1 to: ((self size) min: (array size)) do: [:i|
d at: (self at: i) put: (array at: i).
].
^ d
]
].
({ 'red' . 'one' . 'two' }
dictionaryWithValues: { '#ff0000'. 1. 2 }) displayNl. |
http://rosettacode.org/wiki/Hash_from_two_arrays | Hash from two arrays | Task
Using two Arrays of equal length, create a Hash object
where the elements from one array (the keys) are linked
to the elements of the other (the values)
Related task
Associative arrays/Creation
| #SNOBOL4 | SNOBOL4 | * # Fill arrays
keys = array(5); vals = array(5)
ks = 'ABCDE'; vs = '12345'
kloop i = i + 1; ks len(1) . keys<i> = :s(kloop)
vloop j = j + 1; vs len(1) . vals<j> = :s(vloop)
* # Create hash
hash = table(5)
hloop k = k + 1; hash<keys<k>> = vals<k> :s(hloop)
* # Test an... |
http://rosettacode.org/wiki/Harshad_or_Niven_series | Harshad or Niven series | The Harshad or Niven numbers are positive integers ≥ 1 that are divisible by the sum of their digits.
For example, 42 is a Harshad number as 42 is divisible by (4 + 2) without remainder.
Assume that the series is defined as the numbers in increasing order.
Task
The task is to create a function/method/... | #MATLAB_.2F_Octave | MATLAB / Octave | function v = isharshad(n)
v = isinteger(n) && ~mod(n,sum(num2str(n)-'0'));
end; |
http://rosettacode.org/wiki/Hello_world/Graphical | Hello world/Graphical |
Task
Display the string Goodbye, World! on a GUI object (alert box, plain window, text area, etc.).
Related task
Hello world/Text
| #Go | Go | package main
import "github.com/mattn/go-gtk/gtk"
func main() {
gtk.Init(nil)
win := gtk.NewWindow(gtk.WINDOW_TOPLEVEL)
win.SetTitle("Goodbye, World!")
win.SetSizeRequest(300, 200)
win.Connect("destroy", gtk.MainQuit)
button := gtk.NewButtonWithLabel("Goodbye, World!")
win.Add(button)
button... |
http://rosettacode.org/wiki/GUI_component_interaction | GUI component interaction |
Almost every application needs to communicate with the user in some way.
Therefore, a substantial part of the code deals with the interaction
of program logic with GUI components.
Typically, the following is needed:
put values into input fields under program control
read and check input from the user
pop up dial... | #Julia | Julia | #=
The task: For a minimal "application", write a program that
presents a form with three components to the user: A numeric input
field ("Value") and two buttons ("increment" and "random").
=#
using Tk
w = Toplevel("Component Interaction Example")
fr = Frame(w)
pack(fr, expand=true, fill="both")
value = Entry(fr,... |
http://rosettacode.org/wiki/GUI_component_interaction | GUI component interaction |
Almost every application needs to communicate with the user in some way.
Therefore, a substantial part of the code deals with the interaction
of program logic with GUI components.
Typically, the following is needed:
put values into input fields under program control
read and check input from the user
pop up dial... | #Kotlin | Kotlin | import java.awt.GridLayout
import java.awt.event.ActionEvent
import java.awt.event.ActionListener
import java.awt.event.KeyEvent
import java.awt.event.KeyListener
import javax.swing.*
class Interact : JFrame() {
val numberField = JTextField()
val incButton = JButton("Increment")
val randButton = JButton("... |
http://rosettacode.org/wiki/Hamming_numbers | Hamming numbers | Hamming numbers are numbers of the form
H = 2i × 3j × 5k
where
i, j, k ≥ 0
Hamming numbers are also known as ugly numbers and also 5-smooth numbers (numbers whose prime divisors are less or equal to 5).
Task
Generate the sequence of Hamming numbers, in increasing order. In ... | #AutoHotkey | AutoHotkey | SetBatchLines, -1
Msgbox % hamming(1,20)
Msgbox % hamming(1690)
return
hamming(first,last=0)
{
if (first < 1)
ans=ERROR
if (last = 0)
last := first
i:=0, j:=0, k:=0
num1 := ceil((last * 20)**(1/3))
num2 := ceil(num1 * ln(2)/ln(3))
num3 := ceil(num1 * ln(2)/ln(5))
loop
{
H := (2**i) * (3**j) * (5... |
http://rosettacode.org/wiki/Guess_the_number | Guess the number | Task
Write a program where the program chooses a number between 1 and 10.
A player is then prompted to enter a guess. If the player guesses wrong, then the prompt appears again until the guess is correct.
When the player has made a successful guess the computer will issue a "Well guessed!" message, a... | #Batch_File | Batch File | @echo off
set /a answer=%random%%%(10-1+1)+1
set /p guess=Pick a number between 1 and 10:
:loop
if %guess%==%answer% (echo Well guessed!
pause) else (set /p guess=Nope, guess again:
goto loop) |
http://rosettacode.org/wiki/Guess_the_number | Guess the number | Task
Write a program where the program chooses a number between 1 and 10.
A player is then prompted to enter a guess. If the player guesses wrong, then the prompt appears again until the guess is correct.
When the player has made a successful guess the computer will issue a "Well guessed!" message, a... | #BBC_BASIC | BBC BASIC | choose% = RND(10)
REPEAT
INPUT "Guess a number between 1 and 10: " guess%
IF guess% = choose% THEN
PRINT "Well guessed!"
END
ELSE
PRINT "Sorry, try again"
ENDIF
UNTIL FALSE |
http://rosettacode.org/wiki/Greatest_subsequential_sum | Greatest subsequential sum | Task
Given a sequence of integers, find a continuous subsequence which maximizes the sum of its elements, that is, the elements of no other single subsequence add up to a value larger than this one.
An empty subsequence is considered to have the sum of 0; thus if all elements are negative, the result must be th... | #AWK | AWK | # Finds the subsequence of ary[1] to ary[len] with the greatest sum.
# Sets subseq[1] to subseq[n] and returns n. Also sets subseq["sum"].
# An empty subsequence has sum 0.
function maxsubseq(subseq, ary, len, b, bp, bs, c, cp, i) {
b = 0 # best sum
c = 0 # current sum
bp = 0 # position of best subsequence
bn... |
http://rosettacode.org/wiki/GUI_enabling/disabling_of_controls | GUI enabling/disabling of controls | In addition to fundamental GUI component interaction, an application should
dynamically enable and disable GUI components, to give some guidance to the
user, and prohibit (inter)actions which are inappropriate in the current state
of the application.
Task
Similar to the task GUI component interaction, write a progr... | #Racket | Racket |
#lang racket/gui
(define frame (new frame% [label "Interaction Demo"]))
(define (changed . _)
(define s (send inp get-value))
(define v (string->number s))
(unless v (set! v (or (string->number (regexp-replace* #rx"[^0-9]+" s "")) 0))
(send inp set-value (~a v)))
(send inc-b enable (< v 10))
... |
http://rosettacode.org/wiki/GUI_enabling/disabling_of_controls | GUI enabling/disabling of controls | In addition to fundamental GUI component interaction, an application should
dynamically enable and disable GUI components, to give some guidance to the
user, and prohibit (inter)actions which are inappropriate in the current state
of the application.
Task
Similar to the task GUI component interaction, write a progr... | #Raku | Raku | use GTK::Simple;
use GTK::Simple::App;
my GTK::Simple::App $app .= new( title => 'Controls Enable / Disable' );
$app.set-content(
my $box = GTK::Simple::HBox.new(
my $inc = GTK::Simple::Button.new( label => ' + ' ),
my $value = GTK::Simple::Entry.new,
my $dec = GTK::Simple::Button.ne... |
http://rosettacode.org/wiki/Guess_the_number/With_feedback | Guess the number/With feedback | Task
Write a game (computer program) that follows the following rules:
The computer chooses a number between given set limits.
The player is asked for repeated guesses until the the target number is guessed correctly
At each guess, the computer responds with whether the guess is:
higher than the target,
equal to... | #BCPL | BCPL | get "libhdr"
static $( randstate = ? $)
let rand(min,max) = valof
$( let x = ?
let range = max-min
let mask = 1
while mask < range do mask := (mask << 1) | 1
$( randstate := random(randstate)
x := (randstate >> 6) & mask
$) repeatuntil 0 <= x < range
resultis x + min
$)
let readgue... |
http://rosettacode.org/wiki/Greyscale_bars/Display | Greyscale bars/Display | The task is to display a series of vertical greyscale bars (contrast bars) with a sufficient number of bars to span the entire width of the display.
For the top quarter of the display, the left hand bar should be black, and we then incrementally step through six shades of grey until we have a white bar on the right ha... | #Icon_and_Unicon | Icon and Unicon | link graphics,printf,numbers
procedure main()
DrawTestCard(GreyScale_TestCard())
WDone()
end
procedure greyscale(l,h,s) #: generate s greys over range l:h
every i := round(l to h+1 by ((h-l)/(s-1.))) do
suspend sprintf("%d,%d,%d",i,i,i) # return rgb black-grey-white
end
procedure G... |
http://rosettacode.org/wiki/Guess_the_number/With_feedback_(player) | Guess the number/With feedback (player) | Task
Write a player for the game that follows the following rules:
The scorer will choose a number between set limits. The computer player will print a guess of the target number. The computer asks for a score of whether its guess is higher than, lower than, or equal to the target. The computer guesses, and the score... | #Icon_and_Unicon | Icon and Unicon |
procedure main ()
lower_limit := 1
higher_limit := 100
write ("Think of a number between 1 and 100")
write ("Press 'enter' when ready")
read ()
repeat {
if (higher_limit < lower_limit)
then { # check that player is not cheating!
write ("Something has gone wrong ... I give up")
... |
http://rosettacode.org/wiki/Happy_numbers | Happy numbers | From Wikipedia, the free encyclopedia:
A happy number is defined by the following process:
Starting with any positive integer, replace the number by the sum of the squares of its digits, and repeat the process until the number equals 1 (where it will stay), or it loops endlessly in a cycle which does not inclu... | #Cowgol | Cowgol | include "cowgol.coh";
sub sumDigitSquare(n: uint8): (s: uint8) is
s := 0;
while n != 0 loop
var d := n % 10;
s := s + d * d;
n := n / 10;
end loop;
end sub;
sub isHappy(n: uint8): (h: uint8) is
var seen: uint8[256];
MemZero(&seen[0], @bytesof seen);
while seen[n] ==... |
http://rosettacode.org/wiki/Haversine_formula | Haversine formula |
This page uses content from Wikipedia. The original article was at Haversine formula. The list of authors can be seen in the page history. As with Rosetta Code, the text of Wikipedia is available under the GNU FDL. (See links for details on variance)
The haversine formula is an equation important in navigation, g... | #jq | jq | def haversine(lat1;lon1; lat2;lon2):
def radians: . * (1|atan)/45;
def sind: radians|sin;
def cosd: radians|cos;
def sq: . * .;
(((lat2 - lat1)/2) | sind | sq) as $dlat
| (((lon2 - lon1)/2) | sind | sq) as $dlon
| 2 * 6372.8 * (( $dlat + (lat1|cosd) * (lat2|cosd) * $dlon ) | sqrt | asin) ; |
http://rosettacode.org/wiki/Haversine_formula | Haversine formula |
This page uses content from Wikipedia. The original article was at Haversine formula. The list of authors can be seen in the page history. As with Rosetta Code, the text of Wikipedia is available under the GNU FDL. (See links for details on variance)
The haversine formula is an equation important in navigation, g... | #Jsish | Jsish | /* Haversine formula, in Jsish */
function haversine() {
var radians = arguments.map(function(deg) { return deg/180.0 * Math.PI; });
var lat1 = radians[0], lon1 = radians[1], lat2 = radians[2], lon2 = radians[3];
var R = 6372.8; // km
var dLat = lat2 - lat1;
var dLon = lon2 - lon1;
... |
http://rosettacode.org/wiki/Hello_world/Newline_omission | Hello world/Newline omission | Some languages automatically insert a newline after outputting a string, unless measures are taken to prevent its output.
Task
Display the string Goodbye, World! without a trailing newline.
Related tasks
Hello world/Graphical
Hello world/Line Printer
Hello world/Standard error
Hello world/Text
| #ZX_Spectrum_Basic | ZX Spectrum Basic | 10 REM The trailing semicolon prevents a newline
20 PRINT "Goodbye, World!"; |
http://rosettacode.org/wiki/Hello_world/Text | Hello world/Text | Hello world/Text is part of Short Circuit's Console Program Basics selection.
Task
Display the string Hello world! on a text console.
Related tasks
Hello world/Graphical
Hello world/Line Printer
Hello world/Newbie
Hello world/Newline omission
Hello world/Standard error
Hello world/Web server
| #FunL | FunL | println( 'Hello world!' ) |
http://rosettacode.org/wiki/Hash_from_two_arrays | Hash from two arrays | Task
Using two Arrays of equal length, create a Hash object
where the elements from one array (the keys) are linked
to the elements of the other (the values)
Related task
Associative arrays/Creation
| #Sparkling | Sparkling | let keys = { "foo", "bar", "baz" };
let vals = { 13, 37, 42 };
var hash = {};
for var i = 0; i < sizeof keys; i++ {
hash[keys[i]] = vals[i];
} |
http://rosettacode.org/wiki/Hash_from_two_arrays | Hash from two arrays | Task
Using two Arrays of equal length, create a Hash object
where the elements from one array (the keys) are linked
to the elements of the other (the values)
Related task
Associative arrays/Creation
| #Standard_ML | Standard ML | structure StringMap = BinaryMapFn (struct
type ord_key = string
val compare = String.compare
end);
val keys = [ "foo", "bar", "baz" ]
and vals = [ 16384, 32768, 65536 ]
and myMap = StringMap.empty;
val myMap... |
http://rosettacode.org/wiki/Harshad_or_Niven_series | Harshad or Niven series | The Harshad or Niven numbers are positive integers ≥ 1 that are divisible by the sum of their digits.
For example, 42 is a Harshad number as 42 is divisible by (4 + 2) without remainder.
Assume that the series is defined as the numbers in increasing order.
Task
The task is to create a function/method/... | #Modula-2 | Modula-2 | MODULE Harshad;
FROM InOut IMPORT WriteString, WriteCard, WriteLn;
VAR n, i: CARDINAL;
PROCEDURE DigitSum(n: CARDINAL): CARDINAL;
VAR sum: CARDINAL;
BEGIN
sum := 0;
WHILE n > 0 DO;
sum := sum + n MOD 10;
n := n DIV 10;
END;
RETURN sum;
END DigitSum;
PROCEDURE NextHarshad(n: CARDINA... |
http://rosettacode.org/wiki/Hello_world/Graphical | Hello world/Graphical |
Task
Display the string Goodbye, World! on a GUI object (alert box, plain window, text area, etc.).
Related task
Hello world/Text
| #Groovy | Groovy | import groovy.swing.SwingBuilder
import javax.swing.JFrame
new SwingBuilder().edt {
optionPane().showMessageDialog(null, "Goodbye, World!")
frame(title:'Goodbye, World!', defaultCloseOperation:JFrame.EXIT_ON_CLOSE, pack:true, show: true) {
flowLayout()
button(text:'Goodbye, World!')
textArea(text:'Goo... |
http://rosettacode.org/wiki/GUI_component_interaction | GUI component interaction |
Almost every application needs to communicate with the user in some way.
Therefore, a substantial part of the code deals with the interaction
of program logic with GUI components.
Typically, the following is needed:
put values into input fields under program control
read and check input from the user
pop up dial... | #Lambdatalk | Lambdatalk |
{input {@ id="input" type="text" value="0"}}
{input {@ type="button" value="increment"
onclick="document.getElementById('input').value =
parseInt( document.getElementById('input').value ) + 1;"}}
{input {@ type="button" value="random"
onclick="if (confirm( 'yes?' ))
... |
http://rosettacode.org/wiki/GUI_component_interaction | GUI component interaction |
Almost every application needs to communicate with the user in some way.
Therefore, a substantial part of the code deals with the interaction
of program logic with GUI components.
Typically, the following is needed:
put values into input fields under program control
read and check input from the user
pop up dial... | #Liberty_BASIC | Liberty BASIC | nomainwin
textbox #demo.val, 20, 50, 90, 24
button #demo.inc, "Increment", [btnIncrement], UL, 20, 90, 90, 24
button #demo.rnd, "Random", [btnRandom], UL, 20, 120, 90, 24
open "Rosetta Task: GUI component interaction" for window as #demo
#demo "trapclose [quit]"
validNum$ = "0123456789."
#de... |
http://rosettacode.org/wiki/Grayscale_image | Grayscale image | Many image processing algorithms are defined for grayscale (or else monochromatic) images.
Task
Extend the data storage type defined on this page to support grayscale images.
Define two operations, one to convert a color image to a grayscale image and one for the backward conversion.
To get luminance of a color u... | #11l | 11l | T Colour
Byte r, g, b
F (r, g, b)
.r = r
.g = g
.b = b
F ==(other)
R .r == other.r & .g == other.g & .b == other.b
V black = Colour(0, 0, 0)
V white = Colour(255, 255, 255)
T Bitmap
Int width, height
Colour background
[[Colour]] map
F (width = 40, height = 40, back... |
http://rosettacode.org/wiki/Hamming_numbers | Hamming numbers | Hamming numbers are numbers of the form
H = 2i × 3j × 5k
where
i, j, k ≥ 0
Hamming numbers are also known as ugly numbers and also 5-smooth numbers (numbers whose prime divisors are less or equal to 5).
Task
Generate the sequence of Hamming numbers, in increasing order. In ... | #AWK | AWK |
# syntax: gawk -M -f hamming_numbers.awk
BEGIN {
for (i=1; i<=20; i++) {
printf("%d ",hamming(i))
}
printf("\n1691: %d\n",hamming(1691))
printf("\n1000000: %d\n",hamming(1000000))
exit(0)
}
function hamming(limit, h,i,j,k,n,x2,x3,x5) {
h[0] = 1
x2 = 2
x3 = 3
x5 = 5
for (... |
http://rosettacode.org/wiki/Guess_the_number | Guess the number | Task
Write a program where the program chooses a number between 1 and 10.
A player is then prompted to enter a guess. If the player guesses wrong, then the prompt appears again until the guess is correct.
When the player has made a successful guess the computer will issue a "Well guessed!" message, a... | #Befunge | Befunge | v RNG anthouse
> v ,,,,,,<
v?v ,
vvvvv ,
v?????v ,
vvvvvvvvv ,
>?????????v ,
>vvvvvvvvvv< ,
>??????????< ,
>vvvvvvvvvv< ,
>??????????< ,
>vvvvvvvvvv< ^"Well guessed!"<
>??????????< >"oN",,91v actua... |
http://rosettacode.org/wiki/Guess_the_number | Guess the number | Task
Write a program where the program chooses a number between 1 and 10.
A player is then prompted to enter a guess. If the player guesses wrong, then the prompt appears again until the guess is correct.
When the player has made a successful guess the computer will issue a "Well guessed!" message, a... | #Bracmat | Bracmat | ( ( GuessTheNumber
= mynumber
. clk$:?mynumber
& mod$(!mynumber*den$!mynumber.10)+1:?mynumber
& whl
' ( put'"Guess my number:"
& get':~!mynumber:?K
)
& out'"Well guessed!"
)
& GuessTheNumber$
); |
http://rosettacode.org/wiki/Greatest_subsequential_sum | Greatest subsequential sum | Task
Given a sequence of integers, find a continuous subsequence which maximizes the sum of its elements, that is, the elements of no other single subsequence add up to a value larger than this one.
An empty subsequence is considered to have the sum of 0; thus if all elements are negative, the result must be th... | #BBC_BASIC | BBC BASIC | DIM A%(11) : A%() = 0, 1, 2, -3, 3, -1, 0, -4, 0, -1, -4, 2
PRINT FNshowarray(A%()) " -> " FNmaxsubsequence(A%())
DIM B%(10) : B%() = -1, -2, 3, 5, 6, -2, -1, 4, -4, 2, -1
PRINT FNshowarray(B%()) " -> " FNmaxsubsequence(B%())
DIM C%(4) : C%() = -1, -2, -3, -4, -5
PRINT FNshowarray(C%... |
http://rosettacode.org/wiki/Greatest_subsequential_sum | Greatest subsequential sum | Task
Given a sequence of integers, find a continuous subsequence which maximizes the sum of its elements, that is, the elements of no other single subsequence add up to a value larger than this one.
An empty subsequence is considered to have the sum of 0; thus if all elements are negative, the result must be th... | #Bracmat | Bracmat |
( 0:?max
& :?seq
& -1 -2 3 5 6 -2 -1 4 -4 2 -1
: ?
[%( (
= s sum
. ( sum
= A
. !arg:%?A ?arg&!A+sum$!arg
| 0
)
& ( sum$!sjt:>!max:?max
... |
http://rosettacode.org/wiki/GUI_enabling/disabling_of_controls | GUI enabling/disabling of controls | In addition to fundamental GUI component interaction, an application should
dynamically enable and disable GUI components, to give some guidance to the
user, and prohibit (inter)actions which are inappropriate in the current state
of the application.
Task
Similar to the task GUI component interaction, write a progr... | #Red | Red | Red[]
enable: does [
f/enabled?: 0 = n
i/enabled?: 10 > n
d/enabled?: 0 < n
]
view [
f: field "0" [either error? try [n: to-integer f/text] [f/text: "0"] [enable]]
i: button "increment" [f/text: mold n: add to-integer f/text 1 enable]
d: button "decrement" disabled [f/text: mold n: subtract ... |
http://rosettacode.org/wiki/Guess_the_number/With_feedback | Guess the number/With feedback | Task
Write a game (computer program) that follows the following rules:
The computer chooses a number between given set limits.
The player is asked for repeated guesses until the the target number is guessed correctly
At each guess, the computer responds with whether the guess is:
higher than the target,
equal to... | #Befunge | Befunge | 1:"d">>048*"neewteb rebmun a sseuG">:#,_$\:.\"d na",,\,,:.55+,\-88+0v
<*2\_$\1+%+48*">",,#v>#+:&#>#5-:!_0`00p0"hgih"00g>_0"wol"00g!>_48vv1?
\1-:^v"d correctly!"<^,,\,+55,". >"$_,#!>#:<"Your guess was too"*<>+>
:#,_@>"ess" >"eug uoY"> |
http://rosettacode.org/wiki/Greyscale_bars/Display | Greyscale bars/Display | The task is to display a series of vertical greyscale bars (contrast bars) with a sufficient number of bars to span the entire width of the display.
For the top quarter of the display, the left hand bar should be black, and we then incrementally step through six shades of grey until we have a white bar on the right ha... | #J | J | load 'viewmat'
size=. 2{.".wd'qm' NB. J6
size=. getscreenwh_jgtk_ '' NB. J7
rows=. (2^3+i.4),._1^i.4
bars=. ((64%{.)#[:(<:@|%~i.)*/)"1 rows
togreyscale=. (256#. [:<.255 255 255&*)"0
'rgb' viewmat (4<.@%~{:size)# (64<.@%~{.size)#"1 togreyscale bars |
http://rosettacode.org/wiki/Greyscale_bars/Display | Greyscale bars/Display | The task is to display a series of vertical greyscale bars (contrast bars) with a sufficient number of bars to span the entire width of the display.
For the top quarter of the display, the left hand bar should be black, and we then incrementally step through six shades of grey until we have a white bar on the right ha... | #Java | Java | import javax.swing.* ;
import java.awt.* ;
public class Greybars extends JFrame {
private int width ;
private int height ;
public Greybars( ) {
super( "grey bars example!" ) ;
width = 640 ;
height = 320 ;
setSize( width , height ) ;
setDefaultCloseOperation( JFrame.EXIT_ON_CL... |
http://rosettacode.org/wiki/Guess_the_number/With_feedback_(player) | Guess the number/With feedback (player) | Task
Write a player for the game that follows the following rules:
The scorer will choose a number between set limits. The computer player will print a guess of the target number. The computer asks for a score of whether its guess is higher than, lower than, or equal to the target. The computer guesses, and the score... | #IS-BASIC | IS-BASIC | 100 PROGRAM "GuessIt.bas"
110 LET N=100
120 TEXT 80
130 PRINT "Choose a number between 1 and;" N:PRINT "I will start guess the number."
140 LET BL=1:LET UL=100:LET NR=0
150 DO
160 LET GUESS=INT((BL+UL)/2):LET NR=NR+1
170 SET #102:INK 3:PRINT :PRINT "My";NR;". guess: ";GUESS:SET #102:INK 1
180 LET ANSWER=QUESTION
... |
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