LV1 :: 푸드 파이트 대회

https://school.programmers.co.kr/learn/courses/30/lessons/134240

프로그래머스

 

function solution(food) { 
    var resultarr = [0];
    
    for (i=0; i<food.length; i++){
        if (food[i]%2!=0) {food[i] -= 1;}
    } 
    // food = [0,6,0,2]
    
    for (i=food.length-1; i>=0; i--) {
        for (j=0; j<food[i]/2; j++){
            resultarr.push(i);
            resultarr.unshift(i); 
        }
    } 
    // resultarr = [0,1,2,3,0,6,0,2,3,2,1,0]
    
    return resultarr.join('');
}