1

Recursive Implementation of atoi()

2

Pow(x, n)

3

Count Good numbers

4

Sort a stack using recursion

5

Reverse a stack using recursion

1

Generate all binary strings

2

Generate Paranthesis

3

Print all subsequences/Power Set

4

Learn All Patterns of Subsequences (Theory)

5

Count all subsequences with sum K

6

Check if there exists a subsequence with sum K

7

Combination Sum

8

Combination Sum-II

9

Subset Sum-I

10

Subset Sum-II

11

Combination Sum - III

12

Letter Combinations of a Phone number

1

Palindrome Partitioning

2

Word Search

3

N Queen

4

Rat in a Maze

5

Word Break

6

M Coloring Problem

7

Sudoko Solver

8

Expression Add Operators