摘要： 国际惯例，先上题目：Implement the following operations of a queue using stacks.push(x) -- Push element x to the back of queue.pop() -- Removes the element from... 阅读全文

摘要： 依旧先来题目：Given an arraySofnintegers, find three integers inSsuch that the sum is closest to a given number, target. Return the sum of the three integers... 阅读全文

摘要： 先来题目：'.' Matches any single character.'*' Matches zero or more of the preceding element.The matching should cover the entire input string (not parti... 阅读全文