[Java] 푸드파이트 대회로 알아보는 string, char, int

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

class Solution {
    public String solution(int[] food) {
        String answer = "";
        for(int i=1;i<food.length;i++){
            for(int j=0;j<food[i]/2;j++){
                answer += String.valueOf(i);
            }
        }
        String temp = new String(answer);
        answer += "0";
        for(int k=temp.length()-1;k>-1;k--){
            answer += String.valueOf(temp.charAt(k));
        }
        return answer;
    }
}

class Solution {
    public String solution(int[] food) {
        String answer = "0";

        for (int i = food.length - 1; i > 0; i--) {
            for (int j = 0; j < food[i] / 2; j++) {
                answer = i + answer + i; 
            }
        }

        return answer;
    }
}