[코딩테스트][JAVA] 문자열 겹쳐쓰기

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

프로그래머스

난이도 : LV0

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내 풀이

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

Java String substring() Method : https://www.w3schools.com/java/ref_string_substring.asp

 

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다른 사람 풀이

class Solution {

    public String solution(String my_string, String overwrite_string, int s) {
        String answer = my_string.substring(0, s) + overwrite_string;

        if(my_string.length() > answer.length()) {
            answer += my_string.substring(answer.length());
        }
        return answer;
    }
}