Companies

also at 19 more

2

2.Koko eating bananas

Medium33 co.

Medium

also at 32 more

3

3.LCA in BT

Medium19 co.

Medium

Binary Trees

also at 18 more

4

4.Sort LL

Medium8 co.

Medium

also at 7 more

5

5.Ransom Note

Easy5 co.

Easy

6.Power Set Bit Manipulation

also at 4 more

6

Medium19 co.

Medium

Bit Manipulation

also at 18 more

7

7.Partition Equal Subset Sum

Medium10 co.

Medium

8.Print the matrix in spiral manner

also at 9 more

8

Medium30 co.

Medium

also at 29 more

9

9.Design Hit Counter

Medium18 co.

Medium

Arrays Stack & Queues

also at 17 more

10

10.Contiguous Array

Medium11 co.

Medium

11.Unique Binary Search Trees II

also at 10 more

11

Medium1 co.

Medium

Binary Search Trees

also at 0 more

12

12.Insert Delete GetRandom O(1)

Medium20 co.

Medium

Design

also at 19 more

13

13.Find Numbers with Even Number of Digits

Easy4 co.

Easy

Mathematics

also at 3 more

14

14.Reverse a String I

Easy16 co.

Easy

also at 15 more

15

15.Palindrome Check

Medium28 co.

Medium

also at 27 more

16

16.Zigzag Conversion

Medium10 co.

Medium

18.Next Greater Element III

also at 9 more

17

17.Missing Number

Easy8 co.

Easy

Bit Manipulation

also at 7 more

18

Medium4 co.

Medium

19.Search X in sorted array

also at 3 more

19

Easy12 co.

Easy

20.Rotate matrix by 90 degrees

also at 11 more

20

Medium25 co.

Medium

also at 24 more

21

21.Plus One

Easy11 co.

Easy

Mathematics

also at 10 more

22

22.Integer to Roman

Medium16 co.

Medium

23.Median of 2 sorted arrays

also at 15 more

23

Hard34 co.

Hard

24.Minimum Number of Pushes to Type Word II

also at 33 more

24

Medium3 co.

Medium

also at 2 more

25

25.Single Number - II

Medium16 co.

Medium

also at 15 more

26

26.Jewels and Stones

Easy3 co.

Easy

29.Populating Next Right Pointers in Each Node II

also at 2 more

27

27.Reorganize String

Medium14 co.

Medium

Heaps

also at 13 more

28

28.Trapping Rainwater

Medium48 co.

Medium

Stack & Queues

also at 47 more

29

Medium3 co.

Medium

also at 2 more

30

30.Meeting Rooms II

Medium26 co.

Medium

31.Check for balanced binary tree

also at 25 more

31

Medium8 co.

Medium

Binary Trees

also at 7 more

32

32.Maximum Length Substring With Two Occurrences

Easy5 co.

Easy

33.First Missing Positive

also at 4 more

33

Hard19 co.

Hard

34.K-th Largest element in an array

also at 18 more

34

Medium35 co.

Medium

Heaps

also at 34 more

35

35.Jump Game II

Medium18 co.

Medium

36.Regular Expression Matching

also at 17 more

36

Hard18 co.

Hard

37.Earliest Finish Time for Land and Water Rides I

also at 17 more

37

Easy2 co.

Easy

also at 1 more

38

38.3 Sum

Medium42 co.

Medium

39.Number of Recent Calls

also at 41 more

39

Easy5 co.

Easy

Stack & Queues

also at 4 more

40

40.Container With Most Water

Medium33 co.

Medium

also at 32 more

41

41.Wildcard matching

Medium19 co.

Medium

42.Partition Array for Maximum Sum

also at 18 more

42

Medium2 co.

Medium

43.Implement Magic Dictionary

also at 1 more

43

Medium1 co.

Medium

Tries

also at 0 more

44

44.Divide two numbers without multiplication and division

Medium7 co.

Medium

Bit Manipulation

also at 6 more

45

45.Swap Nodes in Pairs

Medium7 co.

Medium

47.Product of Array Except Self

also at 6 more

46

46.Two Sum

Easy58 co.

Easy

Arrays Hashing

also at 57 more

47

Medium19 co.

Medium

also at 18 more

48

48.Roman to Integer

Easy23 co.

Easy

49.Find square root of a number

also at 22 more

49

Medium16 co.

Medium

also at 15 more

50

50.Design Circular Queue

Medium8 co.

Medium