Linked Questions
38 questions linked to/from Tips for golfing in PHP
121
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409
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Print a 10 by 10 grid of asterisks
Background
This is a standard textbook example to demonstrate for loops.
This is one of the first programs I learnt when I started learning programming ~10 years ago.
Task
You are to print this exact ...
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100
votes
92
answers
17k
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It was just a bug
Inspired by the bugged output in @Carcigenicate's Clojure answer for the Print this diamond challenge.
Print this exact text:
...
- 126k
102
votes
44
answers
13k
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Tips for golfing in <all languages>
The aim of this post is to gather all the golfing tips that can be easily applied to <all languages> rather than a specific one.
Only post answers that its ...
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69
votes
87
answers
12k
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What do you get when you multiply 6 by 9? (42)
I love math. But I can't find a single calculator that can multiply correctly. They seem to get everything right except 6*9 (It's the question to life, the universe, and everything! How could they get ...
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78
votes
66
answers
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Sing Baby Shark
"Baby Shark" is a children's song about a family of sharks. Having long been popular as a campfire song, it has been popularized since the mid-2000s by social media, online video and radio. - ...
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52
votes
83
answers
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Bernardino identifies unaltered dollar words
Definition
A dollar word is a word where when each of its letters is given a cent value, from a = 1 to z = 26, and the letters are summed, the result is 100. Here is an example on CodeReview, and here ...
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37
votes
73
answers
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Randomizing until 0
Challenge
Sandbox post
Given a positive integer (K) Output a uniformly-random integer (Y) between ...
81
votes
30
answers
12k
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Create an "H" from smaller "H"s
Challenge
Create a function or program that, when given an integer size, does the following:
If size is equal to 1, output
...
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25
votes
82
answers
7k
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Invert a boolean array
A nice simple one
Input
Given a boolean array (Or an acceptable alternative), you can assume the array will never be more than 32 elements long.
...
- 2,491
50
votes
50
answers
5k
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Split string on first occurrence of each character
Related.
Given a printable ASCII string, split it into a list of non-empty strings with a new sub-string beginning every time a character, which has not previously been seen in the same case, occurs.
...
- 30.2k
35
votes
60
answers
5k
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Write a Deadfish Interpreter
Sandbox, Codidact
A rewrite of this question with a simpler input format and guidelines.
Challenge
Deadfish uses a single accumulator, on which all commands are to be performed.
It has the following ...
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17
votes
97
answers
5k
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Output the language name times the number of characters [closed]
Challenge:
Your task is to use any language to output that language's name times the number of character's in its name.
Use the common name or acronym of the language.
If there are
multiple versions ...
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43
votes
44
answers
5k
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Write a haiku-w detector
A haiku is a poem with three lines, with a 5/7/5 syllable count, respectively.
A haiku-w is poem with three lines, with a 5/7/5 word count, respectively.
Challenge
Write a program that will return ...
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29
votes
55
answers
4k
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The world ends in ed
Taken straight from the ACM Winter Programming Contest 2013. You are a person who likes to take things literally. Therefore, for you, the end of The World is ed; the last letters of "The" and "World" ...
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22
votes
53
answers
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Create an ASCII line, given a length
Information
Create a diagonal line given its length (let’s call the variable, say, \$n\$ where \$n > 0\$)
The diagonal line starts from the top left and goes to the bottom right.
You must use the ...
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26
votes
44
answers
3k
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22
votes
45
answers
2k
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Shifted auto-sum
Let’s take a positive integer such as 123. We define the shifted auto-sum of this integer as follows:
123 has 3 digits. We thus consider 3 copies of 123.
We stack ...
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31
votes
30
answers
6k
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Is it a Bumpy Word?
(inspired by this challenge over on Puzzling -- SPOILERS for that puzzle are below, so stop reading here if you want to solve that puzzle on your own!)
If a letter in a word occurs alphabetically ...
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29
votes
30
answers
3k
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Bytes/Character
Task
Given a UTF-8 string (by any means) answer (by any means) an equivalent list where every element is the number of bytes used to encode the corresponding input character.
Examples
...
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30
votes
28
answers
8k
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Output all the white or black squares of a chessboard
Introduction
This is how a chessboard looks like.
You can see that a1 is a dark square. However, b1 is a light square.
The Task
...
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39
votes
24
answers
3k
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Print the nth prime that contains n
This question will be a twist on finding the nth prime number.
Challenge
You must write a program that will take one input n, ...
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25
votes
31
answers
2k
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Enumerate an array, grouping duplicates
The objective of this challenge is to take an array of positive integers, and enumerate its indices, grouping like elements.
An enumeration without any duplicates is done by just outputting an array ...
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39
votes
18
answers
4k
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Judge a book by its cover
Overview
The cover of a book will be provided in the following ASCII format:
______
| |
| |
| |
| |
------
The input can be in any reasonable format ...
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22
votes
31
answers
5k
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Sum the First n Even Fibonacci Numbers
There seems not to be a contest for this one yet.
The task is simple. Add the first n numbers of the Fibonacci sequence that are even and output the result.
This ...
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25
votes
25
answers
4k
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Fill a bowl with alphabet soup
We seem to never get tired of alphabet-related challenges...
The recipe
Given
a string of letters S, and
two positive integers ...
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20
votes
31
answers
2k
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Which weekday was it?
This challenge, I hope, is simple to understand. Given a date-string (given in any format you prefer, so long as it has 4 digits of year and 2 digits of day and month), calculate the weekday for the ...
- 2,178
22
votes
21
answers
3k
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Gödel numbering of a string
Background
Gödel numbers are a way of encoding any string with a unique positive integer, using prime factorisations:
First, each symbol in the alphabet is assigned a predetermined integer code.
Then, ...
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18
votes
25
answers
2k
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Factory workers
Challenge
Factory workers are usually very hard-working. However, their work is now being commonly replaced with machines.
You have to write a program that takes a number as input. It will print out ...
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11
votes
39
answers
4k
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Alphabet Position Finder
Inspired by the Codewars Kata.
Your goal is to take an input string such as this one:
"'Twas a dark and stormy night..."
and return a string containing the ...
- 135
8
votes
33
answers
2k
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Custom Rows of Smileys Triangle
This problem is inspired from shinh's problem.
Given an input of positive integer \$n\$, output a smiley triangle (see below) with \$n\$ rows.
Detailed rules
Can be either a function or a full ...
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