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Problem Title

Difficulty

Avg Time to solve

Attempted

Add Two Numbers As Linked Lists ll

138

Moderate

10 mins

1455

Rearrange The Array

18

Moderate

15 mins

249

Maximum sum of two non-overlapping subarrays of a given size

36

Moderate

15 mins

918

Morse Code To English

1

Easy

15 mins

41

Convert binary tree to mirror tree

14

Easy

15 mins

632

Sort An Array According To The Count Of Set Bits

14

Moderate

25 mins

622

Leaders in an array

8

Easy

15 mins

236

Palindrome Partitioning ll

11

Hard

40 mins

776

Anagram Substring Search

10

Moderate

35 mins

483

Minimum Number Of Lamps

7

Easy

10 mins

196

Second largest element in the array

15

Easy

15 mins

1656

Maximum subarray sum after K concatenation

71

Easy

15 mins

7181

Container with Maximum Water

8

Easy

10 mins

143

Next Permutation

42

Moderate

15 mins

2365

Reverse Alternate K nodes

3

Easy

10 mins

70

Median of a BST in O(1) space

4

Easy

10 mins

273

Frequency In A Sorted Array

6

Easy

15 mins

362

Rectangular Numbers

6

Moderate

30 mins

64

Complete Substring!

5

Moderate

30 mins

91

K - Sum Path In A Binary Tree

6

Moderate

35 mins

293

Delete Node In BST

3

Moderate

10 mins

213

Reverse DLL nodes in groups

3

Moderate

10 mins

597

Closest element in BST

6

Easy

15 mins

333

Merge Sort Linked List

7

Moderate

10 mins

198

Segregate Odd-Even

4

Moderate

25 mins

265

Add Two Numbers As Linked Lists ll

Moderate

138 upvotes

Rearrange The Array

Moderate

18 upvotes

Maximum sum of two non-overlapping subarrays of a given size

Moderate

36 upvotes

Morse Code To English

Easy

1 upvote

Convert binary tree to mirror tree

Easy

14 upvotes

Sort An Array According To The Count Of Set Bits

Moderate

14 upvotes

Leaders in an array

Easy

8 upvotes

Palindrome Partitioning ll

Hard

11 upvotes

Anagram Substring Search

Moderate

10 upvotes

Minimum Number Of Lamps

Easy

7 upvotes

Second largest element in the array

Easy

15 upvotes

Maximum subarray sum after K concatenation

Easy

71 upvotes

Container with Maximum Water

Easy

8 upvotes

Next Permutation

Moderate

42 upvotes

Reverse Alternate K nodes

Easy

3 upvotes

Median of a BST in O(1) space

Easy

4 upvotes

Frequency In A Sorted Array

Easy

6 upvotes

Rectangular Numbers

Moderate

6 upvotes

Complete Substring!

Moderate

5 upvotes

K - Sum Path In A Binary Tree

Moderate

6 upvotes

Delete Node In BST

Moderate

3 upvotes

Reverse DLL nodes in groups

Moderate

3 upvotes

Closest element in BST

Easy

6 upvotes

Merge Sort Linked List

Moderate

7 upvotes

Segregate Odd-Even

Moderate

4 upvotes

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