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Problem Title

Difficulty

Avg Time to solve

Attempted

Order of People Heights

122

Ninja

45 mins

597

Maximum Distance

43

Moderate

15 mins

924

Longest Repeating Subsequence

15

Moderate

15 mins

563

Clone Graph

22

Moderate

25 mins

654

Sub Matrices With Sum Zero

11

Moderate

15 mins

149

Regular Expression Matching

17

Hard

25 mins

383

Word Ladder

12

Hard

10 mins

244

Allocate Books

96

Moderate

10 mins

6821

BST queries

26

Easy

10 mins

521

Sum root to leaf

33

Easy

10 mins

1172

Word Search - lll

2

Moderate

20 mins

156

Shortest Alternating Path

5

Moderate

10 mins

61

All Unique Permutations

8

Easy

15 mins

497

Shortest Unique Prefix

7

Moderate

15 mins

103

Largest Distance Between Two Nodes In A Tree

5

Moderate

15 mins

146

Maximum Points On Straight Line

8

Hard

10 mins

281

Single Number II

11

Easy

15 mins

523

Least Common Ancestor

7

Moderate

25 mins

288

Justify Text

7

Hard

35 mins

94

Capture region

5

Moderate

10 mins

89

Four Keys Keyboard

4

Moderate

30 mins

141

Total Strings

2

Moderate

15 mins

1731

Insertion Sort in Linked List

6

Easy

10 mins

207

Allocate Books

135

Moderate

10 mins

5944

Flood Fill Algorithm

17

Moderate

10 mins

1056

Order of People Heights NEW

Ninja

122 upvotes

Maximum Distance NEW

Moderate

43 upvotes

Longest Repeating Subsequence NEW

Moderate

15 upvotes

Clone Graph NEW

Moderate

22 upvotes

Sub Matrices With Sum Zero NEW

Moderate

11 upvotes

Regular Expression Matching NEW

Hard

17 upvotes

Word Ladder NEW

Hard

12 upvotes

Allocate Books NEW

Moderate

96 upvotes

BST queries NEW

Easy

26 upvotes

Sum root to leaf NEW

Easy

33 upvotes

Word Search - lll NEW

Moderate

2 upvotes

Shortest Alternating Path NEW

Moderate

5 upvotes

All Unique Permutations NEW

Easy

8 upvotes

Shortest Unique Prefix NEW

Moderate

7 upvotes

Largest Distance Between Two Nodes In A Tree NEW

Moderate

5 upvotes

Maximum Points On Straight Line NEW

Hard

8 upvotes

Single Number II NEW

Easy

11 upvotes

Least Common Ancestor NEW

Moderate

7 upvotes

Justify Text NEW

Hard

7 upvotes

Capture region NEW

Moderate

5 upvotes

Four Keys Keyboard NEW

Moderate

4 upvotes

Total Strings NEW

Moderate

2 upvotes

Insertion Sort in Linked List NEW

Easy

6 upvotes

Allocate Books NEW

Moderate

135 upvotes

Flood Fill Algorithm NEW

Moderate

17 upvotes

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