摘要：
Implement int sqrt(int x). Compute and return the square root of x, where x is guaranteed to be a non-negative integer. Since the return type is an in 阅读全文
摘要：
Given two arrays, write a function to compute their intersection. Example 1: Example 2: Input: nums1 = [4,9,5], nums2 = [9,4,9,8,4] Output: [9,4] Exam 阅读全文
摘要：
Design a max stack that supports push, pop, top, peekMax and popMax. Example 1: Note: 基本思路同 153. Min Stack，用两个stack 注意popMax()的时候要先把stack中的元素pop出来，直到找 阅读全文