LogFAQs > #961086686

Day 18

Did 3 questions today, because the first two they gave me were Leetcode easy.

First is https://leetcode.com/problems/check-array-formation-through-concatenation/. I misread this question and thought were were asking for a harder solution. I made use of a HashMap to store the first item of a large piece, and iterated through the list to see if the array contained the remainder.

Second is https://leetcode.com/problems/minimum-absolute-difference/. Sorting it first makes it trivial.

Third is https://leetcode.com/problems/minimum-increment-to-make-array-unique/. It was kinda similar to another question I answered. Once again, sorting it makes it much easier to workout. When in doubt, sort it out. Unless of course the questions wants you to keep the array intact.