Golf the Stack Exchange code block The standard Stack Exchange code block button / hot key prepends 4 spaces to each line, unless they all begin with 4 spaces, in which case it removes them. Additionally, it avoids changing the first or last lines if they are empty. But why stop at the first or ...

This challenge is a prize for ais523 for winning the "Rookie of the Year" category in "Best of PPCG 2016". Congratulations! BackFlip is an esoteric programming language made by user ais523, who has created well over 30 other interesting esolangs. BackFlip is a 2D language like Befunge or ><> ...

Garbled Phone Numbers code-golf (de)cipher You know how you get a voicemail message and the person's connection wasn't great, and you're trying to figure out how to call them back, but you're not sure if that was a "5" or an "8" they said? That's this challenge. The good news is that the call...

Backstory I've always found it quite annoying how some numbers in English don't have the same number of syllables even though they have the same number of digits. Example: seven has 2 syllables whereas all of the other digits have one (other than zero). So, when I'm counting in time to somethin...

Jail break In Bhopal An activist, of a banned organisation, plans to escape from Bhopal jail. The activist is basically a monkey man and is able to jump across the wall. He practises to cross a wall. He is able to jump 'X' meters, but because of the slippery wall he falls 'Y' meters after each ...

Behind Enemy Lines From past many years, militant infiltration is increasing with every passing day, especially in J & K region. During a battle between militants and a group of Indian soldiers named Team Alpha, a soldier mistakenly crosses the Pakistan border, while following one of the militan...

We have had addition in sed, but there was not a full calculator, not even one that only supports three basic operators and integers. Now, we are on the great step on being the great GNU sed master. (considering it was hard to even add two numbers). What you should do Given an expression wh...

Problem Last year, the Infinite House of Pancakes introduced a new kind of pancake. It has a happy face made of chocolate chips on one side (the "happy side"), and nothing on the other side (the "blank side"). You are the head cook on duty. The pancakes are cooked in a single row over a hot sur...

100 rep for Making a calculator in GNU sed Considering it is hard to even make addition in GNU sed, It is definitely worth a bounty.

Introduction Forte is a very peculiar esoteric language based on the concept of modifying the values of numbers. In Forte numbers are not constants but variables, you can use the LET instruction to assign new values to them. For example, after executing LET 2=4-1 from now on 2 assumes the value...

Plan your Sundays Who doesn't like to chill on a Sunday morning in summer with a chilled beer and TV or in winter playing badminton or ultimate with friends? I always think knowing how many days you have to chill in a month keeps you well-informed and helps you plan what you want to do. Be it s...

I'm trying to solving maze with limit, I mean for example RROOOOOOOO ORROOOOOOO OORPOOOOOO OOORROOOOO OOOORROOOO OOOOORPOOO OOOOOORROO OOOOOOORRO OOOOOOOORP OOOOOOOOOR where R is a correct path, O is blockade, P i amplifier. If we get P we can go 5 crates where we want. I must get (9,9) from ...

We must printing honey patches: like it: Honey patches: https://pastebin.com/bDjHvsn5 explain: for test nr1 we have four column 1, 1, 1, 1 Denoting the number of hexagonal cells in successive honeycomb columns. Only C, C++, Java, Python, Ruby

Surprise Party for Brain-Flak This question is a Brain-flak Birthday challenge and will be posted on April 28th Tomorrow is Brain-Flak's first Birthday. So I thought we would throw it a surprise birthday party. So in your favorite language print Happy Birthday, Brain-Flak! As always progr...

Your task is to output every single integer from 0 to 50 separated by a comma and a space. This is code-golf so you must try to achieve this in the shortest amount of bytes possible. The output should be: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, ...

Backstory [which is not true] A piano is set up like this: However, on my piano, all of the black keys are broken! I still want to be able to play some chords on my broken piano though. In music, a chord is a group of notes that are played together. To allow for input of chords, I will firs...

I know there are languages designed for code golf (like jelly or many others) But is there one proved to be the best? At least is some range of problems (let's say string manipulation). I understand there is an upper bound in conciseness (one byte) and the languages being enumerables, there is a...

Given a string, find the length of string. Input Format: First line contains single integer t, the number of test-cases. Each of next t lines contains a string of lower case alphabets. Output Format: Output t lines, each containing the single integer, length of corresponding string. Constrai...

You have been given a set of digits, where each digit in the set is distinct, and lies in the range from 0 to 9 inclusive. Now, you need to build a K digit number out of the set of digits given to you. Each digit from the set can be used arbitrary number of times to build the number. Now, there ...

There's a lot of talk lately about end-to-end encryption, and pressure on companies to remove it from their products. I'm not interested in the rights-and-wrongs of that, but I wondered: how short can code be that would get a company pressured into not using it? The challenge here is to implemen...

Given a binary number, your task is to create a 'branch' of that number, with a depth of 2. For example, given 0 as input, you should output exactly this: /000 /00 / \001 0 \ /010 \01 \011 This should be fairly self explanatory of how the branches should be created. Depth ...