Problem You are given an array trees where trees[i] = [x i , y i ] represents the location of a tree in the garden. You are asked to fence the entire garden using the minimum length of rope as it is expensive. The garden is …
Problem You are given a string s consisting of lowercase English letters. A duplicate removal consists of choosing two adjacent and equal letters and removing them. We repeatedly make duplicate removals on s u…
Problem You are given an array of equal-length strings words . Assume that the length of each string is n . Each string words[i] can be converted into a difference integer array difference[i] of length n - 1 where diff…