Merge two BSTs with limited extra space
Merge two BSTs with limited extra space is a DSA topic. In plain words you use it for folder on disk in a file explorer. Don’t start with a slogan — start with that picture.
Smallest example: left < root < right. Type it, run it, and say what you see. If you can do that from memory, you know Merge two BSTs with limited extra space.
From the example next to this theory — Merge two BSTs with limited extra space: dry-run [4, 1, 3].
Trap — unbalanced BST becoming a list. Fix that before you talk about advanced DSA.
Viva — what is Merge two BSTs with limited extra space? Then show left < root < right. Then name the trap.
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What is Merge two BSTs with limited extra space? Show this: left < root < right. Trap: unbalanced BST becoming a list.