Cells with Odd Values in a Matrix, C#

Cells with Odd Values in a Matrix

//Rextester.Program.Main is the entry point for your code. Don't change it.
//Compiler version 4.0.30319.17929 for Microsoft (R) .NET Framework 4.5

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text.RegularExpressions;

namespace Rextester
{
    public class Program
    {
        public static void Main(string[] args)
        {
            //Cells with Odd Values in a Matrix
            
            int rows =2;
            int cols =3;
            int [,] arr = new int[2,3]{ {0, 0, 0},
                                        {0, 0, 0} };
            Display(arr, rows, cols);
            
            
            int[][] indices = new int[2][];
            indices[0] = new int[] {0,1};
            indices[1] = new int[] {1,1};
            
            for(int k=0; k<indices.Length; k ++) {
                int r = indices[k][0];
                int c = indices[k][1];
                // increment val by 1 for all columns
                for(int i=0; i < cols; i++) {
                    arr[r,i] =  arr[r,i] + 1;
                }
                
                // increment col val by 1 for all rows
                for(int i=0; i < rows; i++) {
                    arr[i, c] =  arr[i, c] + 1;
                }
            }
            
            // display array after increment
            Display(arr, 2, 3); 
            
            // get odd vals count
            int res = 0;
            for(int rIndx = 0; rIndx < rows; rIndx++){
                for(int cIndx = 0; cIndx < cols; cIndx++) {
                    if(arr[rIndx,cIndx] % 2 > 0)
                        res++;
                }
            }
            
            Console.WriteLine("Number of odd values : " + res);
        }
        
       public static void Display(int [,] arr, int r, int c) { 
            Console.WriteLine(); 
           for (int i = 0; i < r; i++) {
               for (int j = 0; j < c; j++) {
                Console.Write(arr[i,j] + " "); 
               }
                Console.WriteLine(); 
           }
       }
    }
}


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