Solve top Backtracking and Recursive Interview Questions and be prepared for placements by practicing on CodeStudio.

Problem Title

Difficulty

Avg Time to solve

Attempted

Reverse Stack Using Recursion NEW

72

Easy

21 mins

4913

Look-And-Say Sequence NEW

7

Easy

15 mins

123

Print Permutations - String NEW

42

Easy

30 mins

1494

Valid Sudoku NEW

153

Moderate

40 mins

1103

Word Break-1 NEW

33

Moderate

36 mins

380

Rat In a Maze All Paths NEW

152

Moderate

40 mins

821

N Queens NEW

27

Hard

55 mins

610

Pair Swap NEW

9

Moderate

40 mins

556

Leaves One Level Apart NEW

5

Moderate

40 mins

269

Right View NEW

8

Moderate

35 mins

950

Partial BST NEW

16

Moderate

25 mins

2224

Palindrome Partitioning NEW

10

Moderate

25 mins

460

Convert Bst To The Greater Sum Tree NEW

6

Moderate

30 mins

587

Maze with N doors and 1 Key NEW

5

Moderate

15 mins

501

Permutations NEW

5

Moderate

10 mins

146

Reverse Alternate K nodes NEW

3

Easy

10 mins

71

Remove Consecutive Duplicates NEW

14

Easy

-

1083

Merge Sort Linked List NEW

7

Moderate

10 mins

200

Sort Stack NEW

12

Easy

20 mins

304

Factor Combinations NEW

4

Moderate

35 mins

69

Letter Case Permutation NEW

0

Moderate

15 mins

49

Count of Matches in Tournament NEW

4

Easy

20 mins

138

Flip Game II NEW

2

Easy

15 mins

31

Increasing Order Search Tree NEW

4

Easy

15 mins

64

What will be the ‘k-th’ bit? NEW

2

Moderate

20 mins

41

Reverse Stack Using Recursion NEW

Easy

72 upvotes

Look-And-Say Sequence NEW

Easy

7 upvotes

Print Permutations - String NEW

Easy

42 upvotes

Valid Sudoku NEW

Moderate

153 upvotes

Word Break-1 NEW

Moderate

33 upvotes

Rat In a Maze All Paths NEW

Moderate

152 upvotes

N Queens NEW

Hard

27 upvotes

Pair Swap NEW

Moderate

9 upvotes

Leaves One Level Apart NEW

Moderate

5 upvotes

Right View NEW

Moderate

8 upvotes

Partial BST NEW

Moderate

16 upvotes

Palindrome Partitioning NEW

Moderate

10 upvotes

Convert Bst To The Greater Sum Tree NEW

Moderate

6 upvotes

Maze with N doors and 1 Key NEW

Moderate

5 upvotes

Permutations NEW

Moderate

5 upvotes

Reverse Alternate K nodes NEW

Easy

3 upvotes

Remove Consecutive Duplicates NEW

Easy

14 upvotes

Merge Sort Linked List NEW

Moderate

7 upvotes

Sort Stack NEW

Easy

12 upvotes

Factor Combinations NEW

Moderate

4 upvotes

Letter Case Permutation NEW

Moderate

0 upvotes

Count of Matches in Tournament NEW

Easy

4 upvotes

Flip Game II NEW

Easy

2 upvotes

Increasing Order Search Tree NEW

Easy

4 upvotes

What will be the ‘k-th’ bit? NEW

Moderate

2 upvotes

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