Given the root of a Binary Search Tree (BST), convert it to a Greater Tree such that every key of the original

You are given an array of non-overlapping intervals intervals where intervals[i] = [starti, endi] represent the start and the end of the ith interval and intervals is sorted

You are given a binary array nums and an integer k. A k-bit flip is choosing a subarray of length k from nums and simultaneously changing every 0 in the subarray to 1, and

Given an array of strings strs, group the anagrams together. You can return the answer in any order. An Anagram is a word or phrase formed

Given n non-negative integers representing an elevation map where the width of each bar is 1, compute how much water it can trap

Given an unsorted integer array nums. Return the smallest positive integer that is not present in nums. You must implement an algorithm that runs in O(n) time and

Given the head of a linked list, remove the nth node from the end of the list and return its head. Example 1: Input:

Given an array of integers nums and an integer limit, return the size of the longest non-empty subarray such that the absolute difference between any