贪心:尽量将gas[i]-cost[i]>0的放在前面,gas[i]-cost[i]<0的放在后面.(路程的前面有汽油剩下,耗汽油的放在路程的后面). 能否全程通过的 条件 是:sum(gas[i])>=sum(cost[i]),不满足这个条件就不能全程走一遍: 起点 i 满足的 必要 条件 是:额外剩下的gas(additional_gas)要大于等于0,即 gas[i]-cost[i]>=0: 另外需满足: 找出某站点 i_save ,经过这个站点剩下的gas最多,找出某站点…

134. Gas Station 不会做. 1. 朴素的想法,就是针对每个位置判断一下,然后返回合法的位置,复杂度O(n^2),显然会超时. 把这道题转化一下吧,求哪些加油站不能走完一圈回到自己,要求O(N)的复杂度. 如果sgas < scost,那么显然所有的站点都无法走完一圈. 2. 考虑怎么进行化简,寻找有没有什么可以利用的性质,考虑可不可以进行递推,对每个位置求出gas - cost,然后很明显观察到如果一个位置为负数,那么这个位置显然不能走完一圈,那么接下来 考虑怎么进行简化,找到负…

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 costs cost[i] of gas to travel from station i to its next station (i+1). You begin the journey with an e…

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 costs cost[i] of gas to travel from station i to its next station (i+1). You begin the journey with an e…

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 costs cost[i] of gas to travel from station i to its next station (i+1). You begin the journey with…

因为gas的总数大于cost总时间.你将能够圈住整个城市. 第一溶液: 如果一開始有足够的油.从位置i出发.到位置k时剩余的油量为L(i,k). 对随意的k.L(i,k)依据i的不同,仅仅相差常数. 我们仅仅须要找到最小的L(0, k)相应的k,k+1为所求. 代码例如以下: int canCompleteCircuit(vector<int> &gas, vector<int> &cost) { int start = 0; int curGas = 0, min…

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 costs cost[i] of gas to travel from station i to its next station (i+1). You begin the journey with an e…

870. Advantage Shuffle 思路:A数组的最大值大于B的最大值,就拿这个A跟B比较:如果不大于,就拿最小值跟B比较 A可以改变顺序,但B的顺序不能改变,只能通过容器来获得由大到小的顺序,并且必须存储相应的index,因为最终需要将选择的A的数值存入与这个B相对应的index下 class Solution { public: vector<int> advantageCount(vector<int>& A, vector<int>&…

Gas Station 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 costs cost[i] of gas to travel from station i to its next station (i+1). You begin the journ…

前言   [LeetCode 题解]系列传送门:  http://www.cnblogs.com/double-win/category/573499.html   1.题目描述 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 costs cost[i]…

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 costs cost[i] of gas to travel from station i to its next station (i+1). You begin the journey with an e…

Recording my thought on the go might be fun when I check back later, so this kinda blog has no intention to be read by others(its just for recording, not article). but if you insist, hope you enjoy it. if you find me wrong, please let me know, very a…

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 costs cost[i] of gas to travel from station i to its next station (i+1). You begin the journey with an e…

https://leetcode.com/problems/gas-station/ 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 costs cost[i] of gas to travel from station i to its next…

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 costs cost[i] of gas to travel from station i to its next station (i+1). You begin the journey with an e…

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 costs cost[i] of gas to travel from station i to its next station (i+1). You begin the journey with…

On a horizontal number line, we have gas stations at positions stations[0], stations[1], ..., stations[N-1], where N = stations.length. Now, we add K more gas stations so that D, the maximum distance between adjacent gas stations, is minimized. Retur…

原题地址:https://oj.leetcode.com/problems/gas-station/ 题意: 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 costs cost[i] of gas to travel from station i to…

LeetCode上 Gas Station是比较经典的一题,它的魅力在于算法足够优秀的情况下,代码可以简化到非常简洁的程度. 原题如下 Gas Station 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 costs cost[i] of gas to…

[LeetCode]Gas Station 解题报告 标签(空格分隔): LeetCode 题目地址:https://leetcode.com/problems/gas-station/#/description 题目描述: 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 tan…

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 costs cost[i] of gas to travel from station i to its next station (i+1). You begin the journey with an e…

Gas Station 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 costs cost[i] of gas to travel from station i to its next station (i+1). You begin the journ…

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 costs cost[i] of gas to travel from station i to its next station (i+1). You begin the journey with an e…

问题描述: 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 costs cost[i] of gas to travel from station i to its next station (i+1). You begin the journey wit…

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 costs cost[i] of gas to travel from station i to its next station (i+1). You begin the journey with an e…

Gas Station 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 costs cost[i] of gas to travel from station i to its next station (i+1). You begin the journ…

Problem: 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 costs cost[i] of gas to travel from station i to its next station (i+1). You begin the journey…

[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 costs cost[i] of gas to travel from station i to its next station (i+1). You begin the journey with…

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 costs cost[i] of gas to travel from station i to its next station (i+1). You begin the journey with an e…

  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 costs cost[i] of gas to travel from station i to its next station (i+1). You begin the journey with an…