How to assign a computed value to the same array back?

Answer:

Consider the below input

var input = new string[] { "Apple", "Banana", "Mango", "Apple", "Orange", "Mango", "Strawberry", "Apple" };

The problem is to write a query using LINQ that will count the number of fruits and will assign back the value to the same array i.e. we should not create another array for storing the computed values.

Solution

var input = new string[] { "Apple", "Banana", "Mango", "Apple", "Orange", "Mango", "Strawberry", "Apple" };

            

input = (from a in input

        group a by a into g

        where g.Count() >= 2

        select g.Key + " ( " + g.Count() + " )").ToArray();

Output

Apple ( 3 )

Mango ( 2 )