Dsa
Recursion, Backtracking, and Trees
Build intuition for recursive thinking, backtracking search, tree traversals, LCA, serialization, diameter, and BST operations
Why These Topics Belong Together
Trees are recursive by nature, and backtracking is recursive decision-making in action. If you get comfortable with:
- base case
- work at the current node
- recursive calls on smaller subproblems
you unlock a huge part of interview DSA.