James Pan

原题网址：https://leetcode.com/problems/majority-element/ Given an array of size n, find the majority element. The majority element is the element that appears more than ⌊ n/2 ⌋ times. You may as

原题网址：https://leetcode.com/problems/trapping-rain-water/ Given n non-negative integers representing an elevation map where the width of each bar is 1, compute how much water it is able to trap aft