How Can I Efficiently Retrieve Every nth Item from a List Using LINQ?

Retrieving Specific Items from a List

Often, it becomes necessary to retrieve only certain items from a list based on specific criteria. One such scenario is obtaining every nth item from the list. Here's a solution that leverages LINQ and lambda expressions for efficient item extraction:

return list.Where((x, i) => i % nStep == 0);

In this expression:

• list represents the target list from which you want to extract items.
• nStep specifies the interval at which items should be retrieved (e.g., every 3rd item).
• Where is a LINQ method that filters the list based on a boolean condition.
• The lambda expression (x, i) => i % nStep == 0 evaluates to true for indices that are divisible by nStep, ensuring the selection of only the desired items.

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