C# | Removing first occurrence of object from Collection<T>

Collection<T>.Remove(T) is used to remove the first occurrence of a specific object from the Collection<T>. Syntax:

public bool Remove (T item);

Here, item is the object to remove from the Collection<T>. The value can be null for reference types. Return Value: True if item is successfully removed, otherwise, False. This method also returns False if item was not found in the original Collection<T>. Below given are some examples to understand the implementation in a better way: Example 1: Output:

Count : 5
A
B
C
D
E
Count : 4
A
B
D
E

Example 2:

Output:

Count : 5
2
3
4
4
5
Count : 4
2
3
4
5

Note: This method performs a linear search. Therefore this method is an O(n) operation, where n is Count. Reference:

• https://learn.microsoft.com/en-us/dotnet/api/system.collections.objectmodel.collection-1.remove?view=netframework-4.7.2