using System;

///An integer array is said to be evenSpaced, if the difference between the largest value and the smallest value is an evennumber. Write a function isEvenSpaced(int[] a) that will return 1 if it is evenSpaced and 0 otherwise. If array has less than two elements, function will return 0. If you are programming in C or C++, the function signature is:

///int isEvenSpaced (int a[ ], int len) where len is the number of elements in the array.

///Examples

///Array    Largest value   Smallest value  Difference  Return value

///{100, 19, 131, 140}  140 19  140 -19 = 121   0

///{200, 1, 151, 160}   200 1   200 -1 = 199    0

///{200, 10, 151, 160}  200 10  200 -10 = 190   1

///{100, 19, -131, -140}    100 -140    100 - (-140 ) = 240 1

///{80, -56, 11, -81}   80  -81 -80 - 80 = -161 0

​

public class Program

{

    public static void Main()

    {

        int [] a = {200, 10, 151, 160}; //{100, 19, 131, 140}

        Console.WriteLine(isEvenSpaced(a));

        Console.ReadLine();

    }

    private static int isEvenSpaced(int [] a)

    {

        if(a.Length <= 1) return 0;

        int max = a[0];

        int min = a[0];

        foreach(int n in a)

        {

            max = (max<n)?n:max;

            min = (min>n)?n:min;

        }

        if((max-min) >= 0 && (max-min) % 2 == 0) return 1;

        return 0;

    }

}