摘要： 题目：Given an integer array of sizen, find all elements that appear more than⌊ n/3 ⌋times. The algorithm should run in linear time and in O(1) space.题意：... 阅读全文

摘要： 题目：Implement a basic calculator to evaluate a simple expression string.The expression string contains onlynon-negativeintegers,+,-,*,/operators and em... 阅读全文

摘要： 题目：TheEmployeetable holds all employees. Every employee has an Id, a salary, and there is also a column for the department Id.+----+-------+--------+-... 阅读全文