Linked Questions
112 questions linked to/from Tips for golfing in C
22
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50
answers
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Count repetitions of an array
You will receive an array and must return the number of integers that occur more than once.
[234, 2, 12, 234, 5, 10, 1000, 2, 99, 234]
This will return 2, since ...
- 509
26
votes
42
answers
3k
views
Sum of a range of a sum of a range of a sum of a range of a sum of a range of a sum of
Inspired by the fact that a few related challenges to this could be answered by Vyxal in 0 Bytes using a special flag combination.
Given only one input integer \$n\$, calculate \$f(n,n)\$ where
$$ f(x,...
31
votes
28
answers
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Output a Super Mario Image
This is a problem on Luogu OJ. I decided to post it here because on Luogu OJ, many people, including me and my friend, are interested about how to solve this problem within the fewest characters.
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- 3,946
32
votes
31
answers
4k
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Implement the divisibility-by-7 rule
To check whether a decimal number is divisible by 7:
Erase the last digit. Multiply it by 2 and subtract from what is left. If the result is divisible by 7, the original number is divisible by 7.
(...
- 13.9k
20
votes
37
answers
4k
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Talk interpreter
"Talk" is a baroquified accumulator-based language that is created in response to Dennis's quote on talk.tryitonline.net.
...
user85052
16
votes
53
answers
6k
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Find the minimum and maximum integers in an array, without using builtins
Challenge
Given an array of integers, received from stdin, function arguments, program arguments, or some other method:
Output only the minimum and maximum numbers in the array, through a return value,...
- 6,414
36
votes
26
answers
5k
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Help me sell day-old bagels
You work at a bakery and every day you make exactly 100 bagels. However your customers are not as reliable and every day a random number of bagels will be ordered. So sometimes you will run out of ...
- 100k
24
votes
36
answers
3k
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Sum of two squares
Given a nonnegative integer \$n\$, determine whether \$n\$ can be expressed as the sum of two square numbers, that is \$\exists a,b\in\mathbb Z\$ such that \$n=a^2+b^2\$.
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- 5,014
32
votes
29
answers
2k
views
The Lucky House
There's a minigame in Super Mario 3D World known as the Lucky House. It consists of a slot machine with 4 blocks.
Each block may be one of 5 different icons (Flower, Leaf, Bell, Cherry or Boomerang) ...
- 198k
24
votes
33
answers
4k
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ASCII art uncompression from a base-n number
This is inspired by an 05AB1E answer by Magic Octupus Urn.
Given two arguments, a positive integer and a string/list of characters:
Translate the number to base-n, where n is the length of the ...
- 47.5k
28
votes
19
answers
5k
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Leap for Leap Seconds!
Since today marks the occasion of the 26th leap second ever to occur, your challenge will be to output the date and time of every leap second in GMT or UTC that has occurred so far, as well as the one ...
- 23.5k
24
votes
25
answers
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`lol` is an ambigram, `dad` isn't
Given a word, decide if it is an ambigram.
When rotated:
b > q
d > p
l > l
n > u
o > o
p > d
q > b
s > s
u > n
x > x
z > z
Assume ...
- 1,548
12
votes
48
answers
3k
views
Repeat Hello World according to another string's length
This was related to a program I am writing. Although the title is simple, the challenge is a lot more complicated.
Your challenge
You must write a program that takes an input, and your answer must ...
- 2,274
17
votes
33
answers
10k
views
Increment every number in a string
Given a string containing decimal numbers:
teststring134this 123test string54 100
increment every number in this string by one to give the new string
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- 289
52
votes
11
answers
17k
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Write an interpreter for the untyped lambda calculus
The challenge is to write an interpreter for the untyped lambda calculus in as few characters as possible. We define the untyped lambda calculus as follows:
Syntax
There are the following three ...
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