프로그래머스 lv0. 문자열 겹쳐쓰기 java

https://school.programmers.co.kr/learn/courses/30/lessons/181943

프로그래머스

 

class Solution {
    public String solution(String my_string, String overwrite_string, int s) {
         String answer = "";
        answer = my_string.substring(0, s) + overwrite_string +
                my_string.substring(s + overwrite_string.length(), my_string.length());
        return answer;
    }
}

 

class Solution {
    public static String solution(String my_string, String overwrite_string, int s) {
        String answer = "";
        answer = my_string.substring(0, s) + overwrite_string +
                my_string.substring(s + overwrite_string.length(), my_string.length());
        return answer;
    }

    public static void main(String[] args) {
        String my_string1 = "He11oWor1d";
        String overwrite_string1 = "lloWorl";
        int s1 = 2;
        String solution1 = solution(my_string1, overwrite_string1, s1);
        System.out.println(solution1);

        String my_string2 = "Program29b8UYP";
        String overwrite_string2 = "merS123";
        int s2 = 7;
        String solution2 = solution(my_string2, overwrite_string2, s2);
        System.out.println(solution2);
    }
}