I guess I'll expand my comment into an answer, because there's a lot I didn't say. On chat, I see a lot of rooms with "regulars" - a small group of folks that have been in the room since its conception, and continue to play major roles in the dynamics of conversations there. They often have pers...

This should be a fairly simple challenge. For an array of numbers, generate an array where for every element all neighbouring elements are added to itself, and return the sum of that array. Here is the transformation which occurs on the input array [1,2,3,4,5] [1,2,3,4,5] => [1+2, 2+1+3, 3+2+4...

Given a list of indices and zero or more lists of integers, output the lists of integers, sorted in ascending order, with the key priority from the first input. Example Let the keys input be [1, 0, 2], and the lists input be [[5, 3, 4], [6, 2, 1], [5, 2, 1]]. Those lists need to be sorted by th...