Jean

摘要： 题目：Given a sorted array, remove the duplicates in place such that each element appear only once and return the new length. Do not allocate extra space 阅读全文

摘要： 题目：Given n non-negative integers a1, a2, ..., an, where each represents a point at coordinate (i, ai). n vertical lines are drawn such that the two en 阅读全文