프로그래머스-HashMap사용 : 위장 (getOfDefault)

import java.util.*;
import java.util.Map.*;
class Solution {
    public int solution(String[][] clothes) {
        Map<String, Integer> map = new HashMap<>();
        for (int i=0; i<clothes.length; i++) {
            map.put(clothes[i][1], map.getOrDefault(clothes[i][1], 1) + 1);
        }
        System.out.println(map);
        
        Set<Entry<String, Integer>> set = map.entrySet();
        Iterator it = set.iterator();
        int result = 1;
        while (it.hasNext()) {
            Entry<String, Integer> entry = (Entry)it.next();
            result = result * entry.getValue();
        }
        // System.out.println(result);
        return result-1;
    }
}