题目描述 在一条环路上有 N 个加油站,其中第 i 个加油站有汽油 gas[i] 升. 你有一辆油箱容量无限的的汽车,从第 i 个加油站开往第 i+1 个加油站需要消耗汽油 cost[i] 升.你从其中的一个加油站出发,开始时油箱为空. 如果你可以绕环路行驶一周,则返回出发时加油站的编号,否则返回 -1. 说明: 如果题目有解,该答案即为唯一答案. 输入数组均为非空数组,且长度相同. 输入数组中的元素均为非负数. 示例 1: 输入: gas = [1,2,3,4,5] cost = [3,4,5…

2019-06-01 17:09:30 问题描述: 问题求解: 其实本题本质上是一个数学题. [定理] 对于一个循环数组,如果这个数组整体和 SUM >= 0,那么必然可以在数组中找到这么一个元素:从这个数组元素出发,绕数组一圈,能保证累加和一直是出于非负状态. [证明] 从第一个数字开始进行累加和,中间必然会有一个累加和最低的点,我们设为x.最后的sum >= 0. 现在我们从x出发向后累加,那么必然处于非负状态,并且到了最后一个站点还会有一定的盈余,再从开始向最低点x进发也必然不会出现负数…

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…

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…

[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…

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…

题目描述: 中文: 在一条环路上有 N 个加油站,其中第 i 个加油站有汽油 gas[i] 升. 你有一辆油箱容量无限的的汽车,从第 i 个加油站开往第 i+1 个加油站需要消耗汽油 cost[i] 升.你从其中的一个加油站出发,开始时油箱为空. 如果你可以绕环路行驶一周,则返回出发时加油站的编号,否则返回 -1. 说明: 如果题目有解,该答案即为唯一答案. 输入数组均为非空数组,且长度相同. 输入数组中的元素均为非负数. 英文: There are N gas stations along 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…

［抄题］: 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…