[프로그래머스/JAVA] 문자열 섞기

class Solution {
    public String solution(String str1, String str2) {
        String answer = "";
        
        for(int i=0; i<str1.length(); i++){
            answer += str1.substring(i,i+1);
            answer += str2.substring(i,i+1);
        }
            
        return answer;
    }
}

 

다른 풀이

class Solution {
    public String solution(String str1, String str2) {
        String answer = "";

        for(int i = 0; i < str1.length(); i++){
            answer+= str1.charAt(i);
            answer+= str2.charAt(i);
        }

        return answer;
    }
}

class Solution {
    public String solution(String str1, String str2) {
        String answer = "";

        int length = str1.length();
        String[] str1arr = str1.split("");
        String[] str2arr = str2.split("");
        for (int i=0; i<length; i++) {
            answer += str1arr[i]+str2arr[i];
        }

        return answer;
    }
}