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

摘要： 问题来源：leetCode Sudoku SolverWrite a program to solve aSudoku puzzle by filling the empty cells.Empty cells are indicated by the character *.*.You may a... 阅读全文

摘要： RescueTime Limit:2 Seconds Memory Limit:65536 KBAngel was caught by the MOLIGPY! He was put in prison by Moligpy. The prison is described as a N * M (... 阅读全文

摘要： 唉不想说什么了poj 1703,从看完题到写完第一个版本的代码，只有15分钟然后一直从晚上八点WA到第二天早上最后终于发现了BUG，题目要求的“Not sure yet.”，我打成了“No sure yet.”然后是RQNOJ的NOIP真题，经典的能量项链从看完题到写完伪码用了30分钟，敲完全部代码... 阅读全文

摘要： 首先是原题，转自UVAOJThe ? 1 ? 2 ? ... ? n = k problemThe problemGiven the following formula, one can set operators '+' or '-' instead of each '?', in order t... 阅读全文

摘要： 原题：双向链表中，需要三个基本数据，一个携带具体数据，一个携带指向上一环节的prev指针，一个携带指向下一环节的next指针。请改写双向链表，仅用一个指针np实现双向链表的功能。定义np为next XOR prev，请根据表头提供的信息，为双向链表编写插入函数、删除函数和查找函数，并在O(1)时间内... 阅读全文