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…

class Solution { public: inline int get_next(int idx, int size) { ? : idx+; } int aux(int idx, vector<int>& gas, vector<int>& cost) { int i = idx; int left = gas[i] - cost[i]; ) ; i = get_next(i, gas.size()); while( i!= idx) { left = l…

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…

思路: https://leetcode.com/problems/gas-station/discuss/269604/Java-Greedy-thought-process 关键是要想清楚如果从加油站A出发到不了B,那么从A到B之间的任何一个加油站出发也到不了B. 实现: #include <bits/stdc++.h> using namespace std; class Solution { public: int canCompleteCircuit(vector<int>…

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 = [3,4,5,1,2]…

题目描述 给出一个有n个元素的数组S,S中是否有元素a,b,c满足a+b+c=0?找出数组S中所有满足条件的三元组. 注意: 三元组(a.b.c)中的元素必须按非降序排列.(即a≤b≤c) 解集中不能包含重复的三元组. 例如,给定的数组 S = {-1 0 1 2 -1 -4},解集为(-1, 0, 1) (-1, -1, 2) Given an array S of n integers, are there elements a, b, c in S such that a + b + c …