Backtracking

3 frameworks

F1–F3

Tree Traversal

1 framework

F4

Graph Exploration

1 framework

F5

Stack Discipline

2 frameworks

F6–F7

Pointer Manipulation

1 framework

F8

Search

1 framework

F9

Hash Strategies

1 framework

F10

Sliding Window

1 framework

F11

Recursion & DP

1 framework

F12

Divide & Conquer

1 framework

F13

Interval & Math

1 framework

F14

Queue Patterns

1 framework

F15