Companies

Advanced Range Data Structures

also at 10 more

3

3.Snapshot Array

Medium7 co.

Medium

also at 6 more

4

4.Jump Game II

Medium18 co.

Medium

6.Path with minimum effort

also at 17 more

5

5.LRU Cache

Medium52 co.

Medium

Hashing Linked List

also at 51 more

6

Medium9 co.

Medium

Heaps Graphs

also at 8 more

7

7.Merge Intervals

Medium51 co.

Medium

9.Minimum Operations to Halve Array Sum

also at 50 more

8

8.Valid Number

Hard2 co.

Hard

Strings

also at 1 more

9

Medium2 co.

Medium

Heaps

also at 1 more

10

10.Maximum path sum

Hard18 co.

Hard

also at 17 more

11

11.Binary Tree Cameras

Hard6 co.

Hard

12.Group Words by Anagrams

also at 5 more

12

Medium35 co.

Medium

also at 34 more

13

13.Trapping Rainwater

Medium48 co.

Medium

14.First Missing Positive

also at 47 more

14

Hard19 co.

Hard

Hashing

also at 18 more

15

15.Top K Frequent Elements

Medium33 co.

Medium

Hashing Heaps

also at 32 more

16

16.Car Fleet

Medium2 co.

Medium

17.Zig Zag or Spiral Traversal

also at 1 more

17

Medium11 co.

Medium

also at 10 more

18

18.Clone Graph

Medium10 co.

Medium

19.Search in rotated sorted array-I

also at 9 more

19

Medium34 co.

Medium

Binary Search

also at 33 more

20

20.Diameter of Binary Tree

Medium22 co.

Medium

21.Maximum Sum of an Hourglass

also at 21 more

21

Medium1 co.

Medium

Matrix

also at 0 more

22

22.3 Sum

Medium42 co.

Medium

24.Left Rotate Array by K Places

also at 41 more

23

23.Search in a 2D Matrix

Medium18 co.

Medium

Binary Search

also at 17 more

24

Easy25 co.

Easy

25.Rotate matrix by 90 degrees

also at 24 more

25

Medium25 co.

Medium

also at 24 more

26

26.Decode String

Medium18 co.

Medium

27.Minimum Cost to Make All Characters Equal

also at 17 more

27

Medium1 co.

Medium

28.Swap For Longest Repeated Character Substring

also at 0 more

28

Medium1 co.

Medium

Strings

also at 0 more

29

29.Task Scheduler

Medium17 co.

Medium

Heaps Greedy Algorithms

also at 16 more

30

30.Number of islands

Medium48 co.

Medium

31.Online Majority Element In Subarray

also at 47 more

31

Hard1 co.

Hard

Advanced Range Data Structures

also at 0 more

32

32.Surrounded Regions

Medium13 co.

Medium

Arrays Graphs

also at 12 more

33

33.Find the Winner of the Circular Game

Medium7 co.

Medium

also at 6 more

34

34.Meeting Rooms II

Medium26 co.

Medium

35.Pacific Atlantic Water Flow

also at 25 more

35

Medium6 co.

Medium

also at 5 more

36

36.Course Schedule II

Medium26 co.

Medium

37.Min Cost to Connect All Points

also at 25 more

37

Medium5 co.

Medium

38.Sliding Window Maximum

also at 4 more

38

Medium36 co.

Medium

39.Check If Word Is Valid After Substitutions

also at 35 more

39

Medium1 co.

Medium

Hashing Recursion & Backtracking+1

also at 0 more

40

40.Word ladder II

Hard9 co.

Hard

also at 8 more

41

41.Detect Cycles in 2D Grid

Medium2 co.

Medium

43.Grumpy Bookstore Owner

also at 1 more

42

42.Max Stack

Hard3 co.

Hard

Linked List

also at 2 more

43

Medium3 co.

Medium

44.Split array - largest sum

also at 2 more

44

Medium23 co.

Medium

Binary Search Dynamic Programming

also at 22 more

45

45.Longest palindromic subsequence

Medium15 co.

Medium

47.Delivering Boxes from Storage to Ports

also at 14 more

46

46.Asteroid Collision

Medium31 co.

Medium

Arrays Stack & Queues

also at 30 more

47

Hard1 co.

Hard

Advanced Range Data Structures

also at 0 more

48

48.Best Sightseeing Pair

Medium2 co.

Medium

49.Maximum Employees to Be Invited to a Meeting

also at 1 more

49

Hard2 co.

Hard

50.Partitioning Into Minimum Number Of Deci-Binary Numbers

also at 1 more

50

Medium2 co.

Medium