1184公交站间的距离（leetcode1184）

题目：公交站间的距离

class Solution {
public:
    int distanceBetweenBusStops(vector& distance, int start, int destination) {
        int cwd=0;
        //存储顺时针距离
        int ccwd=0;
        //存储逆时针距离
        int n=distance.size();
        for(size_t i=start;i!=destination;i=(i+1)%n){
            cwd+=distance[i];
        }
        for(size_t i=destination;i!=start;i=(i+1)%n){
            ccwd+=distance[i];
        }
        
        return min(cwd,ccwd);

    }
};