Recursion Awareness

Recursion is a way of solving a problem by having a function call itself on a smaller version of the same problem, continuing until it reaches a base case simple enough to answer directly without calling itself again. Recursion and iteration (repeating with a loop) can often solve the exact same kind of problem, but recursion expresses the solution as one smaller copy of the original problem rather than as a sequence of repeated steps; because each recursive call typically needs its own memory to keep track of where it is until it returns, a recursive solution can end up using significantly more memory than an equivalent loop, especially if the problem does not reduce to its base case quickly.

This explanation is AI-generated and can occasionally be wrong. 🚩 Report