so I am trying to take all the numbers from a list that are less than 5 and I try to put them in another list and print that list. I have no idea how to do that in c#. I will be very grateful if you'd help me. Thank you and here is my code:

using System;
namespace exercices
{
   class Hello
   {
      static void Main(string[] args)
      {
       int[] a = { 1, 2, 3, 4, 5, 6, };
       int[] b = { };

       for (int i = 0; i < a.Length; i  )

        {
            if (a[i] < 5) 
            {
                b.Append(a[i]);
            }
      }
   }

}

CodePudding user response：

Method 1. Just check every element

You should use List<T> collection in this method. It's possible to convert it to array later, if you need.

List<int> b = new();

foreach (int element in a)
{
    if (element < 5)
    {
        b.Add(element);
    }
}

Method 2. Use Array.FindAll<T> method

int[] b = Array.FindAll(a, element => element < 5);

Method 3. Use LINQ

int[] b = a.Where(element => element < 5).ToArray();

CodePudding user response：

You could do something like this:

for (int i = 0; i < a.Length; i  )
{
    Int number=a[i];
    if (number < 5)
    b.Insert(i, number);
}