Companies

2.Non-overlapping Intervals

also at 17 more

2

Medium22 co.

Medium

Arrays Greedy Algorithms

also at 21 more

3

3.Graph Valid Tree

Medium4 co.

Medium

5.Cheapest flight within K stops

also at 3 more

4

4.Meeting Rooms II

Medium26 co.

Medium

Greedy Algorithms

also at 25 more

5

Medium15 co.

Medium

7.Random Pick with Weight

also at 14 more

6

6.Jump Game II

Medium18 co.

Medium

Greedy Algorithms

also at 17 more

7

Medium8 co.

Medium

Binary Search

also at 7 more

8

8.Trapping Rainwater

Medium48 co.

Medium

also at 47 more

9

9.Number of islands

Medium48 co.

Medium

Advanced Range Data Structures

also at 47 more

10

10.Design Circular Queue

Medium8 co.

Medium

Linked List

also at 7 more

11

11.My Calendar I

Medium5 co.

Medium

also at 4 more

12

12.LRU Cache

Medium52 co.

Medium

Hashing Linked List

also at 51 more

13

13.Word Search II

Hard13 co.

Hard

Tries

also at 12 more

14

14.Shortest Bridge

Medium7 co.

Medium

15.Most stones removed with same row or column

also at 6 more

15

Medium4 co.

Medium

16.Maximum Number of Removable Characters

also at 3 more

16

Medium2 co.

Medium

Binary Search

also at 1 more

17

17.Valid Word Abbreviation

Easy4 co.

Easy

Strings

also at 3 more

18

18.Find the Maximum Length of a Good Subsequence I

Medium1 co.

Medium

19.Top K Frequent Elements

also at 0 more

19

Medium33 co.

Medium

Hashing Heaps

also at 32 more

20

20.Calculate Amount Paid in Taxes

Easy2 co.

Easy

Arrays

also at 1 more

21

21.String Transformation

Hard1 co.

Hard

also at 0 more

22

22.Longest Univalue Path

Medium2 co.

Medium

Binary Trees

also at 1 more

23

23.Basic Calculator

Hard13 co.

Hard

24.Shortest Word Distance

also at 12 more

24

Easy3 co.

Easy

Strings

also at 2 more

25

25.The Maze

Medium5 co.

Medium

26.Design In-Memory File System

also at 4 more

26

Hard10 co.

Hard

Tries

also at 9 more

27

27.Campus Bikes

Medium2 co.

Medium

Heaps

also at 1 more

28

28.Basic Calculator II

Medium14 co.

Medium

29.Sort an array of 0's 1's and 2's

also at 13 more

29

Medium32 co.

Medium

Sorting

also at 31 more

30

30.Implement Min Stack

Medium27 co.

Medium

also at 26 more

31

31.Decode String

Medium18 co.

Medium

32.Time Based Key-Value Store

also at 17 more

32

Medium15 co.

Medium

Design

also at 14 more

33

33.Making a large island

Hard13 co.

Hard

35.Design Browser History

also at 12 more

34

34.Design Circular Deque

Medium1 co.

Medium

Linked List

also at 0 more

35

Medium6 co.

Medium

Linked List

also at 5 more

36

36.Parallel Courses II

Hard2 co.

Hard

37.Design Add and Search Words Data Structure

also at 1 more

37

Medium6 co.

Medium

Tries

also at 5 more

38

38.Course Schedule I

Medium27 co.

Medium

also at 26 more

39

39.Max Area of Island

Medium10 co.

Medium

40.Minimum Window Substring

also at 9 more

40

Medium30 co.

Medium

Strings

also at 29 more

41

41.Roman to Integer

Easy23 co.

Easy

Hashing

also at 22 more

42

42.Web Crawler Multithreaded

Medium1 co.

Medium

44.Maximum Number of Upgradable Servers

also at 0 more

43

43.Merge K sorted Lists

Medium33 co.

Medium

Linked List Heaps

also at 32 more

44

Medium1 co.

Medium

Binary Search

also at 0 more

45

45.Design Hit Counter

Medium18 co.

Medium

Arrays Stack & Queues

also at 17 more

46

46.Maximum Number of Events That Can Be Attended II

Hard2 co.

Hard

47.Count Nodes Equal to Average of Subtree

also at 1 more

47

Medium1 co.

Medium

Binary Trees

also at 0 more

48

48.Task Scheduler

Medium17 co.

Medium

Heaps Greedy Algorithms

also at 16 more

49

49.Possible Bipartition

Medium6 co.

Medium