When should I definitely use recursion?
Recursion is highly recommended for problems involving Trees, Graphs, Backtracking, and Divide & Conquer (like Merge Sort), where iteration becomes overly complex.
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More FAQs in Recursive vs Iterative Functions (Brief Intro)
An iterative function uses loops (for, while) to repeat a block of code until a specific condition evaluates to false.
Recursion is a technique where a function calls itself to solve a progressively smaller instance of the same problem until it reaches a base case.
Usually, yes. Recursion has overhead because the system must allocate memory and manage the Call Stack for every single function call.
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