第三天

package LeeCodeCrack;

public class ArrayGasStation {

    public int Circuit(int[] gas,int[]cost){
        int sum=0;
        int index=0;
        int x=0;
        for(int i=0;i<gas.length;i++){
            sum+=gas[i]-cost[i];
            if(sum<0){
                index=i;
            }else{
                index=-1;
            }
        }
        return index;
    }
    public static void main(String[] args){
        ArrayGasStation a=new ArrayGasStation();
        int[] gas={1,2,3,3};
        int[] cost={1,2,3,4};
        int result=a.Circuit(gas, cost);
        System.out.println(result);
        
    }

}