Companies

also at 5 more

2

2.Course Schedule I

Medium27 co.

Medium

also at 26 more

3

3.Sliding Window Maximum

Medium36 co.

Medium

also at 35 more

4

4.Basic Calculator II

Medium14 co.

Medium

6.Serialize and De-serialize BT

also at 13 more

5

5.Merge Intervals

Medium51 co.

Medium

Greedy Algorithms

also at 50 more

6

Hard21 co.

Hard

8.Longest Palindromic Substring

also at 20 more

7

7.Integer to Roman

Medium16 co.

Medium

Hashing

also at 15 more

8

Medium40 co.

Medium

Strings Dynamic Programming

also at 39 more

9

9.Find Nearest Point That Has the Same X or Y Coordinate

Easy1 co.

Easy

also at 0 more

10

10.LFU Cache

Hard28 co.

Hard

Hashing Linked List

also at 27 more

11

11.Similar String Groups

Hard1 co.

Hard

also at 0 more

12

12.Design File System

Medium6 co.

Medium

14.Largest rectangle in a histogram

also at 5 more

13

13.K Nearest Integers

Medium20 co.

Medium

Heaps

also at 19 more

14

Hard30 co.

Hard

15.Trie Implementation and Advanced Operations

also at 29 more

15

Medium20 co.

Medium

16.Longest Increasing Path in a Matrix

also at 19 more

16

Hard7 co.

Hard

17.Count All Valid Pickup and Delivery Options

also at 6 more

17

Hard1 co.

Hard

Dynamic Programming

also at 0 more

18

18.Single-Threaded CPU

Medium3 co.

Medium

Heaps

also at 2 more

19

19.Maximum Path Quality of a Graph

Hard2 co.

Hard

also at 1 more

20

20.Next Permutation

Medium32 co.

Medium

also at 31 more

21

21.Mice and Cheese

Medium1 co.

Medium

Heaps

also at 0 more

22

22.Word Search II

Hard13 co.

Hard

23.Add two numbers in Linked List

also at 12 more

23

Medium38 co.

Medium

Linked List

also at 37 more

24

24.Sliding Window Median

Hard3 co.

Hard

also at 2 more

25

25.Basic Calculator

Hard13 co.

Hard

26.Interval List Intersections

also at 12 more

26

Medium5 co.

Medium

Intervals

also at 4 more

27

27.Design In-Memory File System

Hard10 co.

Hard

28.Maximum Profit in Job Scheduling

also at 9 more

28

Hard12 co.

Hard

Dynamic Programming

also at 11 more

29

29.Sudoku Solver

Hard16 co.

Hard

Recursion & Backtracking

also at 15 more

30

30.Koko eating bananas

Medium33 co.

Medium

Binary Search

also at 32 more

31

31.Search Suggestions System

Medium9 co.

Medium

also at 8 more

32

32.LRU Cache

Medium52 co.

Medium

Hashing Linked List

also at 51 more

33

33.4 Sum

Medium25 co.

Medium

also at 24 more

34

34.Buddy Strings

Easy3 co.

Easy

Hashing

also at 2 more

35

35.Course Schedule II

Medium26 co.

Medium

also at 25 more

36

36.Walls and Gates

Medium8 co.

Medium

37.Minimize Malware Spread

also at 7 more

37

Hard3 co.

Hard

39.Diameter of Binary Tree

also at 2 more

38

38.Best Meeting Point

Medium5 co.

Medium

Sorting

also at 4 more

39

Medium22 co.

Medium

also at 21 more

40

40.Jump Game - I

Medium29 co.

Medium

Greedy Algorithms

also at 28 more

41

41.Swim in Rising Water

Medium4 co.

Medium

42.Minimum Number of Steps to Make Two Strings Anagram

also at 3 more

42

Medium4 co.

Medium

Hashing

also at 3 more

43

43.Subsequence With the Minimum Score

Hard1 co.

Hard

Binary Search

also at 0 more

44

44.Count Nodes With the Highest Score

Medium2 co.

Medium

also at 1 more

45

45.Making a large island

Hard13 co.

Hard

46.Range Sum Query 2D - Immutable

also at 12 more

46

Medium2 co.

Medium

Design

also at 1 more

47

47.Design Browser History

Medium6 co.

Medium

Linked List

also at 5 more

48

48.Asteroid Collision

Medium31 co.

Medium

Arrays Stack & Queues

also at 30 more

49

49.Shortest Path to Get Food

Medium3 co.

Medium

50.Group Words by Anagrams

also at 2 more

50

Medium35 co.

Medium