[프로그래머스] 위장 Java

```
import java.io.;
import java.util.;

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

    int allCloth = clothes.length;
    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);
    }

    int com = 1;

    for(Integer i : map.values()) {
        com*=i;
    }

    answer = com;

    return answer-1;
}
```