Created
September 30, 2020 21:15
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gasstation.cpp https://leetcode.com/problems/gas-station/ | my solution in javascript
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| /** | |
| * @param {number[]} gas | |
| * @param {number[]} cost | |
| * @return {number} | |
| */ | |
| var canCompleteCircuit = function(gas, cost) { | |
| let start=0, gasLeft=0, sum=0; // left-gas left in the tank | |
| for (let i=0; i<gas.length; i++) { | |
| gasLeft+= gas[i] - cost[i]; | |
| sum+= gas[i] - cost[i]; | |
| if (sum<0) { | |
| sum=0; | |
| start=i+1; | |
| } | |
| } | |
| return gasLeft<0 ? -1: start; | |
| } |
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