내 풀이

class Solution {
    public int[][] solution(int[] num_list, int n) {
        int[][] answer = {};
        answer = new int[num_list.length/n][n];
        for(int i = 0 ; i <num_list.length/n ; i++ ){
            for(int j = 0 ; j<n ; j++){
                answer[i][j] = num_list[n*i+j];
            }
        }           
        return answer;
    }
}