//Hannah Imperial BSCS 3-4

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    using System;

    class Swap

    {

        public static void Main(String[] args)

        {

            int[] arrInput = {1,2,3,4,5}; 

            int n = arrInput.Length;

​

            for(int i = 0; i < n; i++)

            {

                for(int j = i + 1; j < n; j++)

                {

                    if (arrInput[i] >= 0 && arrInput[j] >= 0 && arrInput[i] % 2 == 0 && arrInput[j] % 2 != 0) 

                    {                       

                        int tmp = arrInput[i];

                        arrInput[i] = arrInput[j];

                        arrInput[j] = tmp;

                        arrInput[j] = -arrInput[j];

                        break;                  

                    }

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                    else if (arrInput[i] >= 0 && arrInput[j] >= 0 && arrInput[i] % 2 != 0 && arrInput[j] % 2 == 0)

                    {

                        int tmp = arrInput[i];

                        arrInput[i] = arrInput[j];

                        arrInput[j] = tmp;

                        arrInput[j] = -arrInput[j];

                        break;

                    }

                }

            }

            for(int i = 0; i < n; i++)

                arrInput[i] = Math.Abs(arrInput[i]);

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            for(int i = 0; i < n; i++)

                Console.Write(arrInput[i] + " ");

        }

    }

​

​

​