class Solution {
    public String solution(String[] my_strings, int[][] parts) {
        String answer = "";
        return answer;
    }
}

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해결법

방법 1

class Solution {
    public String solution(String[] my_strings, int[][] parts) {
        String answer = "";
        
        for (int i = 0; i < my_strings.length; i++) {
        	String str = my_strings[i];
            answer += str.substring(parts[i][0], parts[i][1] + 1);
        }
        
        return answer;
    }
}

• substring()

방법 2

import java.util.*;

class Solution {
    public String solution(String[] my_strings, int[][] parts) {
        String answer = "";

        for (int i = 0; i < parts.length; i++){
            answer += my_strings[i].substring(parts[i][0], parts[i][1] + 1);
        }

        return answer;
    }
}

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