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 )
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