[Programmers] Lv.0 / 숫자 찾기 / Java

문제

 

풀이

import java.util.Arrays;

class Solution {
    public int solution(int num, int k) {
        int index = Integer.toString(num).indexOf(Integer.toString(k));
        return (index == -1) ? index : index + 1;
    }
}

import java.util.Arrays;

class Solution {
    public int solution(int num, int k) {
        int index = String.valueOf(num).indexOf(String.valueOf(k));
        return (index == -1) ? index : index + 1;
    }
}

class Solution {
    public int solution(int num, int k) {
        return ("-" + num).indexOf(String.valueOf(k));
    }
}

 

출처

https://school.programmers.co.kr/learn/courses/30/lessons/120904