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]…

[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…

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 a…

class Solution { public: int canCompleteCircuit(vector<int>& gas, vector<int>& cost) { int n = gas.size(); ) ; ; ; ; ; ; while(cnt < n) { sum += gas[i] - cost[i]; ) { sum = ; cnt = ; start = (i+)%n; //从这个i开始的 } else { cnt ++; } i =…

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…

题意:从m个加油站里面选取1个站点,使得其离住宅的最近距离mindis尽可能地远,并且离所有住宅的距离都在服务范围ds之内.如果有很多相同mindis的加油站,输出距所有住宅平均距离最小的那个.如果平均值还是一样,就输出按照顺序排列加油站编号最小的. 分析:加油站之间也是彼此有路连接的,所以最短路径计算的时候也要把加油站算上,是双向边,所以边的数组大小得开两倍.加油站编号记为n+1~n+m,对这些点用dijkstra计算最短路径即可,这里顺便在dijkstra中进行了剪枝处理,不剪枝也没事. #…

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…

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…