Companies

also at 0 more

4

4.Task Scheduler

Medium17 co.

Medium

Heaps Greedy Algorithms

also at 16 more

5

5.Max Points on a Line

Hard8 co.

Hard

6.Diameter of Binary Tree

also at 7 more

6

Medium22 co.

Medium

7.Add two numbers in Linked List

also at 21 more

7

Medium38 co.

Medium

8.Linked List Random Node

also at 37 more

8

Medium1 co.

Medium

9.Maximum Sum of Distinct Subarrays With Length K

also at 0 more

9

Medium3 co.

Medium

Arrays

also at 2 more

10

10.Fibonacci Number

Easy12 co.

Easy

12.Best time to buy and sell stock

also at 11 more

11

11.LRU Cache

Medium52 co.

Medium

Hashing Linked List

also at 51 more

12

Medium45 co.

Medium

13.Find the Duplicate Number

also at 44 more

13

Medium16 co.

Medium

Arrays Bit Manipulation

also at 15 more

14

14.Unique paths II

Medium12 co.

Medium

also at 11 more

15

15.Reverse a LL

Medium30 co.

Medium

also at 29 more

16

16.Add Two Numbers II

Medium4 co.

Medium

also at 3 more

17

17.Task Scheduler II

Medium1 co.

Medium

19.Count the Number of Good Subsequences

also at 0 more

18

18.Top K Frequent Words

Medium7 co.

Medium

Tries

also at 6 more

19

Medium10 co.

Medium

20.Design Memory Allocator

also at 9 more

20

Medium10 co.

Medium

Design

also at 9 more

21

21.Remove Duplicates from Sorted List II

Medium5 co.

Medium

also at 4 more

22

22.House robber

Medium33 co.

Medium

also at 32 more

23

23.Contains Duplicate

Easy15 co.

Easy

24.Top K Frequent Elements

also at 14 more

24

Medium33 co.

Medium

Hashing Heaps

also at 32 more

25

25.Find Middle of Linked List

Easy12 co.

Easy

27.Longest Palindromic Substring

also at 11 more

26

26.Koko eating bananas

Medium33 co.

Medium

Binary Search

also at 32 more

27

Medium40 co.

Medium

Strings Dynamic Programming

also at 39 more

28

28.Climbing stairs

Medium24 co.

Medium

30.Minimum Operations to Reduce an Integer to 0

also at 23 more

29

29.Number of islands

Medium48 co.

Medium

Graphs

also at 47 more

30

Medium3 co.

Medium

31.Valid Paranthesis Checker

also at 2 more

31

Medium50 co.

Medium

Greedy Algorithms

also at 49 more

32

32.Find Median from Data Stream

Medium30 co.

Medium

Heaps

also at 29 more

33

33.Minimum Size Subarray Sum

Medium12 co.

Medium

Binary Search

also at 11 more

34

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

Medium18 co.

Medium

36.Fizz Buzz Multithreaded

also at 17 more

35

35.Decode String

Medium18 co.

Medium

Stack & Queues

also at 17 more

36

Medium1 co.

Medium

Design

also at 0 more

37

37.Sliding Window Maximum

Medium36 co.

Medium

Stack & Queues

also at 35 more

38

38.Median of 2 sorted arrays

Hard34 co.

Hard

Binary Search

also at 33 more

39

39.Best time to buy and sell stock II

Medium24 co.

Medium

also at 23 more

40

40.Minimum Path Sum

Medium8 co.

Medium

41.Delete Duplicate Folders in System

also at 7 more

41

Hard1 co.

Hard

Tries

also at 0 more

42

42.Third Maximum Number

Easy2 co.

Easy

Sorting

also at 1 more

43

43.Design Circular Queue

Medium8 co.

Medium

45.Binary Subarrays With Sum

also at 7 more

44

44.Sliding Puzzle

Hard3 co.

Hard

Graphs

also at 2 more

45

Medium14 co.

Medium

Arrays Hashing

also at 13 more

46

46.Previous Permutation With One Swap

Medium1 co.

Medium

Greedy Algorithms

also at 0 more

47

47.The Maze

Medium5 co.

Medium

Graphs

also at 4 more

48

48.Largest Number

Medium9 co.

Medium

Greedy Algorithms

also at 8 more

49

49.Remove Duplicates from Sorted List

Easy6 co.

Easy

50.Serialize and De-serialize BT

also at 5 more

50

Hard21 co.

Hard