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Recursion for Coding Interviews in JavaScript

Converting Iterative Code to Recursive Code

Explore the process of converting iterative code to recursive code in JavaScript by identifying loops, defining base cases, and transforming loop bodies into recursive calls. This lesson helps you understand recursion fundamentals and apply them through practical examples like string reversal, preparing you for recursion challenges in coding interviews.

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The key to transforming iterative code to recursive code is to find the specific lines of code that get transformed between the two implementations.

Steps for Converting Iterative Code to Recursive

  1. Identify the main loop

    • This loop should be modifying one or more variables

  2. Use the loop condition as the base case and the body of the loop as the recursive case.

  3. The local variables in the iterative version turn into parameters in the recursive version.

  4. Compile and rerun tests.

  5. Refactor the new function: You may be able to remove some temporary variables and find a ...