[ 프로그래머스 / C# ] 없는숫자 더하기(Except)

문제

https://programmers.co.kr/learn/courses/30/lessons/86051

코딩테스트 연습 - 없는 숫자 더하기

 

---

using System;

public class Solution {
    public int solution(int[] numbers) {
        int answer = 0;
        int temp = 0;
        
        for(int i = 0; i<numbers.Length; i++)
            temp+=numbers[i];
        
        answer= 45-temp;
        return answer;
    }
}

 

Except 활용

https://docs.microsoft.com/en-us/dotnet/api/system.linq.enumerable.except?view=net-5.0 

Enumerable.Except Method (System.Linq)

using System;
using System.Linq;

public class Solution {
    public int solution(int[] numbers) {
        int[] numbs = new int[10]{0,1,2,3,4,5,6,7,8,9};
        
        int answer = numbs.Except(numbers).Sum();
        return answer;
    }
}