[Solved] What happens if you use OrderBy on a collection with duplicate keys? For example:var nums = new List<int> { 2, 3, 2, 1 }; var sorted = nums.OrderBy(n => n); | C Sharp (C#)

C Sharp (C#) - LINQ Fundamentals

What happens if you use OrderBy on a collection with duplicate keys? For example:

var nums = new List<int> { 2, 3, 2, 1 };
var sorted = nums.OrderBy(n => n);

AOrderBy throws an exception on duplicates

BDuplicates are removed automatically

CDuplicates are preserved and appear in sorted order

DOnly the first occurrence of each key is kept

Step-by-Step Solution

Solution:

Step 1: Understand OrderBy behavior with duplicates
OrderBy sorts all elements, including duplicates, preserving them.
Step 2: Confirm duplicates are not removed
Duplicates remain in the sorted sequence; no elements are removed.
Final Answer:
Duplicates are preserved and appear in sorted order -> Option C
Quick Check:
OrderBy keeps duplicates, sorts all elements [OK]

Quick Trick: OrderBy sorts all elements, duplicates stay [OK]

Common Mistakes:

MISTAKES

Master "LINQ Fundamentals" in C Sharp (C#)

9 interactive learning modes - each teaches the same concept differently

More C Sharp (C#) Quizzes

What happens if you use OrderBy on a collection with duplicate keys? For example: