[코딩 기초 트레이닝] 배열 비교하기

문제 :

https://school.programmers.co.kr/learn/courses/30/lessons/181856

프로그래머스

 

해결 :

import java.util.*;

class Solution {
    public int solution(int[] arr1, int[] arr2) {
        int sum1 = 0;
        int sum2 = 0;
        
        if(arr1.length < arr2.length){
            return -1;
        }else if(arr1.length > arr2.length){
            return 1;
        }else{
            sum1 = Arrays.stream(arr1).sum();
            sum2 = Arrays.stream(arr2).sum();
            
            return sum1==sum2 ? 0: sum1 > sum2 ? 1:-1; 
        }
    }
}

 

다른 사람 풀이 :

import java.util.stream.IntStream;

class Solution {
    public int solution(int[] arr1, int[] arr2) {
        int answer = Integer.compare(arr1.length, arr2.length);

        if(answer == 0) {
            answer = Integer.compare(IntStream.of(arr1).sum(), IntStream.of(arr2).sum());
        }

        return answer;
    }
}