Inverted ragged list Given a ragged list of positive integers, where the maximum depth is \$d_\text{max}\$, return the same list, except for every element \$e\$, its depth is \$d_\text{max}+1-d_e\$ (where \$d_e\$ is the depth of that element). Test cases [] -> [] [[1,2],3,4] -> [1,2,[3,4]] [3,[2,...

Prime strings Your task is to find the string consisting of all the words in the give input whose lengths are prime numbers Test cases: The quick brown fox jumps over the lazy dog. -> The quick brown fox jumps the Omicron Effect: Foreign Flights Won't Resume On Dec 15, Decision Later. -> Omicron...

Shuffle up a list Given two lists \$A\$ and \$B\$, with no repeats in elements and so that the elements of \$B\$ are identical to the elements of \$A\$ except for the order they are in, we say \$B\$ is an \$n\$-well-shuffled list of \$A\$ (where \$n\$ is a nonnegative integer) if: For any \$(a_1...

so, say, a golf post could tell the user to do something with 1/10 chance, this is how i write it: if(Random.nextUInt()%10u<1u) this code snippet would be fine if the random number generator generated something within the ranges of \$10^n\$ to \$10^{>n}\$, but it generates numbers within, speakin...

Decompress a ragged list code-golfragged-list Your input is a ragged list of possibly empty lists of non-negative integers. For example, [[2,0],[[]],[[[],[1],[]],[]]] is a valid input. This input is a "compressed" ragged list. What this means is that when we have a list of numbers, we interpret t...

There is a 3x3 square block made of 1x1 square blocks, with coins in each 1x1 block, starting from top left block you want to collect all the coins and return to top left block again, if possible provide instructions to achieve this. Rules From block \$(x,y)\$ in one step you can move right(R) t...

I have a coding problem that goes like this: Given a positive integer \$N\$, return a list of all possible pairs of positive integers \$(x,y)\$ such that $$\frac1x+\frac1y=\frac1N$$, where \$N\$ is a positive integer. I already solved the problem using Python, but I was wondering how I can code...

If we have a binary matrix then we will say that a \$1\$ is stable if it is in the bottom row or it is adjacent to a \$1\$ which is stable. In other words there must be a path to the bottom row consisting only of \$1\$s. So in the following matrix the \$1\$s highlighted in red are not stable. $$ ...

Intro Two numbers are a reversed multiple pair if they satisfy the following property: $$ a\times b = reversed( (a-1)\times b ) $$ Here, \$reversed()\$ means to reverse the digits of a number (e. g 123 becomes 321.) Example $$ a=6, b=9, 6\times9=54,5\times9=45 $$ As you can see, \$45\$ is the rev...

Based on some research it seems the leaves contain tannins and so I imagine some number of rounds of boiling are required to extract those/reduce them to an acceptable level. But the texture of oak leaves isn't ideal for eating based on what I remember as a kid. So i'm curious how to deal with th...