Question

How to rearrange array and set even indexed values to be smaller than odd indexed values in C#

Answer 1

using System;

public class Program
{
	private static void RearrangeOddEven(int[] arr) {
		for (int i = 0; i < arr.Length - 1; i++) {
			if (i % 2 == 0 && arr[i] > arr[i + 1]) {
				int temp = arr[i];
				arr[i] = arr[i + 1];
				arr[i + 1] = temp;
			}
			if (i % 2 != 0 && arr[i] < arr[i + 1]) {
				int temp = arr[i];
				arr[i] = arr[i + 1];
				arr[i + 1] = temp;
			}
		}
	}
	public static void Main(string[] args)
	{
        int[] arr = new int[] {1, 2, 3, 5, 8, 6, 7, 4};

		RearrangeOddEven(arr);

		Console.WriteLine(String.Join(" ", arr));
	}
}




/*
run:
 
1 3 2 8 5 7 4 6
 
*/

 

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