assigning new array to the array passed by reference

Jon Smit

write a OddNumbers method,The method should take an integer array passed using the ref keyword.

After the method is executed the array that was passed in should retain contain only the even numbers in the same order, and should have no space free

using System;

namespace HelloWorld
{
class Program
{
static string GetArrayAsString(int[] array)
{
if(array.Length == 0) return "";

string str = "";
int i = 0;
for(; i < array.Length - 1; i++)
{
str += array[i] + ", ";
}
str += array[i];

return str;
}

static void Main(string[] args)
{
int[] array = { 3, 8, 12, 31, 5, 78, 90 };
removeOddNumbers(ref array);

Console.WriteLine(GetArrayAsString(array));
}
}
}

1 Reply

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Sreekanth Reddy7y ago
Accepted answer
Hi Jon,
I had used Lambda expression in the method "RemoveOddNumbers()" as like below :

class Program
{
static string GetArrayAsString(int[] array)
{
if (array.Length == 0) return "";
string str = "";
int i = 0;
for (; i < array.Length - 1; i++)
{
str += array[i] + ", ";
}
str += array[i];
return str;
}
static void Main(string[] args)
{
int[] array = { 3, 8, 12, 31, 5, 78, 90 };
RemoveOddNumbers(ref array);
foreach(int item in array)
{
Console.WriteLine(item);
}
Console.ReadLine();
}
private static void RemoveOddNumbers(ref int[] array)
{
array = array.Where(y => y % 2 == 0).ToArray();
}
}

If it helps, Mark as answer.
Thank you.
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