Filter and transform with LINQ in C#

C# interview exercise on Collections & LINQ, difficulty 1 of 3. Solve it in the editor beside a worked example; the tests run the moment you do.

Write SumOfEvenSquares(nums) that squares the even numbers and adds them up. Odd numbers are ignored.

Each exercise pairs a worked example with a twin problem to solve in a real editor; the tests run the moment you do. Progress is saved in your browser, and in your account if you sign in.

More Collections & LINQ in C#

• Unique, ascending
• Chunk into groups
• Flatten deeply with pattern matching
• Rotate right by k
• Transpose a jagged array
• Merge overlapping intervals
• Max sum of k consecutive

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