[알고리즘문제풀기] 꼬리 문자열

문제

내가 작성한 정답

String

class Solution {
    public String solution(String[] str_list, String ex) {
        String answer = "";
        for(String s : str_list){
            if(s.contains(ex)) continue;
            else answer += s;
        }
        return answer;
    }
}

StringBuilder

class Solution {
    public String solution(String[] str_list, String ex) {
        StringBuilder sb = new StringBuilder();
        for(String s : str_list){
            if(!s.contains(ex)) sb.append(s);
        }
        return sb.toString();
    }
}

StreamAPI

import java.util.Arrays;
import java.util.stream.Collectors;

class Solution {
    public String solution(String[] str_list, String ex) {
        return Arrays.stream(str_list)
                .filter(s->!s.contains(ex))
                .collect(Collectors.joining());
    }
}