[Algorithm] 정수 뒤집어서 return

문제

해결

const reverse = x => {
 let arr = x.toString().split('').reverse();

 if(arr.includes('-')){
   arr.pop();
   arr.unshift('-');
 } 
 
 if(arr.includes('0')){
   arr.shift();
 }

 return Number(arr.join(''));
}