[LeetCode] 771. Jewels and Stones - Java

• 문제 링크

Jewels and Stones - LeetCode

 

• 풀이 코드

public class Solution {

    public int numJewelsInStones(String jewels, String stones) {
        boolean[] arr = new boolean[128];
        for (char c : jewels.toCharArray()) arr[c] = true;

        int cnt = 0;
        for (char c : stones.toCharArray()) if (arr[c]) cnt++;

        return cnt;
    }

}