LeetCode 657 Judge Route Circle

Input: "UD"
Output: true

Input: "LL"
Output: false

判断是否是个圆形

let x = 0;
    let y = 0;
   for(let i = 0;i < moves.length; i++){
       if(moves[i] == 'L'){
           x++;
       }
       if(moves[i] == 'R'){
           x--;
       }
       if(moves[i] == 'U'){
           y++;
       }
       if(moves[i] == 'D'){
           y--;
       }
   }
    if(x==0 && y==0){
        return true;
    }
    return false;