[프로그래머스]Lv.0 배열 만들기 3 C# (linq 포함)

https://school.programmers.co.kr/learn/courses/30/lessons/181895

프로그래머스

소스코드1

using System;
using System.Collections.Generic;
using System.Linq;
public class Solution {
    public int[] solution(int[] arr, int[,] intervals) {
        List<int> answer = new List<int>();
            for (int i = 0; i < intervals.GetLength(0); i++)
            {
                int s = intervals[i,0];
                int e = intervals[i, 1];

                answer.AddRange( arr.Where((x, index) => index >= s && index <= e));
            }
            return answer.ToArray();
    }
}

소스코드2

using System;
using System.Collections.Generic;
using System.Linq;
public class Solution {
    public int[] solution(int[] arr, int[,] intervals) {
          int size1 = intervals[0, 1] - intervals[0, 0] + 1;
            int size2 = intervals[1, 1] - intervals[1, 0] + 1;

            int[] answer = new int[size1 + size2];
            Array.Copy(arr, intervals[0, 0], answer, 0, size1);
            Array.Copy(arr, intervals[1, 0], answer, size1, size2);

            return answer;
    }
}