Companies

2.Shortest Distance from All Buildings

also at 0 more

2

Hard6 co.

Hard

also at 5 more

3

3.Move Zeros to End

Easy31 co.

Easy

also at 30 more

4

4.Integer to Roman

Medium16 co.

Medium

also at 15 more

5

5.Unique Email Addresses

Easy3 co.

Easy

6.Minimum Distance Between BST Nodes

also at 2 more

6

Easy1 co.

Easy

Binary Search Trees

also at 0 more

7

7.Power of Four

Easy2 co.

Easy

Bit Manipulation

also at 1 more

8

8.As Far from Land as Possible

Medium2 co.

Medium

also at 1 more

9

9.Palindrome Pairs

Hard3 co.

Hard

Tries

also at 2 more

10

10.Fibonacci Number

Easy12 co.

Easy

Dynamic Programming

also at 11 more

11

11.Maximum path sum

Hard18 co.

Hard

12.Clone a LL with random and next pointer

also at 17 more

12

Medium23 co.

Medium

Linked List

also at 22 more

13

13.Check if a tree is a BST or not

Medium18 co.

Medium

14.Add two numbers in Linked List

also at 17 more

14

Medium38 co.

Medium

Linked List

also at 37 more

15

15.Alien Dictionary

Medium14 co.

Medium

Arrays Strings+1

also at 13 more

16

16.Merge two Sorted Lists

Medium32 co.

Medium

Linked List Recursion & Backtracking

also at 31 more

17

17.Is Subsequence

Easy8 co.

Easy

Dynamic Programming

also at 7 more

18

18.Longest String Chain

Medium6 co.

Medium

Dynamic Programming

also at 5 more

19

19.Kadane's Algorithm

Medium45 co.

Medium

20.Container With Most Water

also at 44 more

20

Medium33 co.

Medium

Greedy Algorithms

also at 32 more

21

21.Word Search II

Hard13 co.

Hard

Tries

also at 12 more

22

22.Clone Graph

Medium10 co.

Medium

also at 9 more

23

23.Subdomain Visit Count

Medium2 co.

Medium

also at 1 more

24

24.Number of islands

Medium48 co.

Medium

also at 47 more

25

25.Group Shifted Strings

Medium3 co.

Medium

27.Strong Password Checker

also at 2 more

26

26.Escape The Ghosts

Medium1 co.

Medium

Mathematics

also at 0 more

27

Hard2 co.

Hard

Heaps

also at 1 more

28

28.Power Set Bit Manipulation

Medium19 co.

Medium

Bit Manipulation

also at 18 more

29

29.Shortest Word Distance

Easy3 co.

Easy

Strings

also at 2 more

30

30.Count and Say

Medium7 co.

Medium

Strings

also at 6 more

31

31.Lowest Common Ancestor of a Binary Tree III

Medium7 co.

Medium

Hashing Binary Trees

also at 6 more

32

32.3 Sum

Medium42 co.

Medium

also at 41 more

33

33.Find peak element

Medium28 co.

Medium

Binary Search

also at 27 more

34

34.Two Sum

Easy58 co.

Easy

Arrays Hashing

also at 57 more

35

35.Right/Left View of BT

Medium13 co.

Medium

36.Diameter of Binary Tree

also at 12 more

36

Medium22 co.

Medium

39.Print all nodes at a distance of K in BT

also at 21 more

37

37.Trapping Rainwater

Medium48 co.

Medium

Stack & Queues

also at 47 more

38

38.Rotten Oranges

Medium39 co.

Medium

Arrays Graphs

also at 38 more

39

Medium18 co.

Medium

41.K Closest Points to Origin

also at 17 more

40

40.Decode String

Medium18 co.

Medium

Stack & Queues

also at 17 more

41

Medium4 co.

Medium

42.Longest Palindromic Substring

also at 3 more

42

Medium40 co.

Medium

Strings Dynamic Programming

also at 39 more

43

43.Pow(x,n)

Medium19 co.

Medium

Mathematics

also at 18 more

44

44.Verifying an Alien Dictionary

Easy4 co.

Easy

also at 3 more

45

45.Invalid Transactions

Medium2 co.

Medium

also at 1 more

46

46.Merge Intervals

Medium51 co.

Medium

Greedy Algorithms

also at 50 more

47

47.Design HashSet

Easy1 co.

Easy

Linked List

also at 0 more

48

48.Roman to Integer

Easy23 co.

Easy

49.Unique Morse Code Words

also at 22 more

49

Easy1 co.

Easy

also at 0 more

50

50.LCA in BT

Medium19 co.

Medium