How do I solve recursion problems step by step?
Start from the definition: recursion refers to a technique where a function solves a problem by calling itself on a smaller input. Then define the base case first, then express the general case in terms of it. Follow that same order every time and most questions on this topic become mechanical rather than intimidating.
How to approach it step by step
Most learners lose marks on recursion not because the concept is hard, but because the steps get done out of order. This is exactly where a live 1:1 session helps: LetMeTeach solves one problem visually with you, then hands you a similar one and checks each step as you work, adapting the difficulty to how you answer.
Worked example
Factorial of 5 unfolds as 5 × 4 × 3 × 2 × 1 = 120.
The mistake most learners make
Writing a recursive call with no reachable base case, causing infinite recursion.
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