Top Recursion And Backtracking Interview Questions
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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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