摘要：题目：'?' Matches any single character.'*' Matches any sequence of characters (including the empty sequence).The matching should cover the entire input s... 阅读全文

摘要：题目：There are N children standing in a line. Each child is assigned a rating value.You are giving candies to these children subjected to the following ... 阅读全文

摘要：题目：There are N gas stations along a circular route, where the amount of gas at station i is gas[i].You have a car with an unlimited gas tank and it co... 阅读全文

摘要：题目：You are given an n x n 2D matrix representing an image.Rotate the image by 90 degrees (clockwise).Follow up:Could you do this in-place?思路：思路就是先进行对角... 阅读全文

摘要：题目：Given an integer, convert it to a roman numeral.Input is guaranteed to be within the range from 1 to 3999.思路：1. 构造values,和numerals 数组保存 十进制数字 与罗马数字... 阅读全文