Companies

2.Group Words by Anagrams

also at 5 more

2

Medium35 co.

Medium

also at 34 more

3

3.Generate Parentheses

Medium32 co.

Medium

Recursion & Backtracking

also at 31 more

4

4.String Compression

Medium21 co.

Medium

also at 20 more

5

5.Target sum

Medium7 co.

Medium

6.Top K Frequent Elements

also at 6 more

6

Medium33 co.

Medium

Hashing Heaps

also at 32 more

7

7.Count subarrays with given sum

Medium36 co.

Medium

Arrays Hashing

also at 35 more

8

8.Single element in sorted array

Medium23 co.

Medium

Binary Search

also at 22 more

9

9.Set Matrix Zeroes

Medium17 co.

Medium

Arrays Hashing

also at 16 more

10

10.Pow(x,n)

Medium19 co.

Medium

Mathematics

also at 18 more

11

11.Find Minimum Diameter After Merging Two Trees

Hard2 co.

Hard

Graphs

also at 1 more

12

12.Best time to buy and sell stock II

Medium24 co.

Medium

13.Longest Repeating Character Replacement

also at 23 more

13

Medium22 co.

Medium

also at 21 more

14

14.Next Permutation

Medium32 co.

Medium

15.Maximum Score with Co-Prime Element

also at 31 more

15

Hard1 co.

Hard

Hashing

also at 0 more

16

16.Reverse Words in a String II

Medium5 co.

Medium

18.Time Needed to Rearrange a Binary String

also at 4 more

17

17.Find peak element

Medium28 co.

Medium

Binary Search

also at 27 more

18

Medium2 co.

Medium

19.Container With Most Water

also at 1 more

19

Medium33 co.

Medium

also at 32 more

20

20.Simplify Path

Medium12 co.

Medium

also at 11 more

21

21.Zigzag Conversion

Medium10 co.

Medium

22.Longest common subsequence

also at 9 more

22

Medium22 co.

Medium

23.Maximum Profit From Trading Stocks

also at 21 more

23

Medium8 co.

Medium

24.Check if a Parentheses String Can Be Valid

also at 7 more

24

Medium3 co.

Medium

25.First Missing Positive

also at 2 more

25

Hard19 co.

Hard

Hashing

also at 18 more

26

26.Combination Sum

Medium25 co.

Medium

Recursion & Backtracking

also at 24 more

27

27.Jump Game II

Medium18 co.

Medium

also at 17 more

28

28.Fruit Into Baskets

Medium8 co.

Medium

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

also at 7 more

29

Medium32 co.

Medium

Sorting

also at 31 more

30

30.Median of 2 sorted arrays

Hard34 co.

Hard

Binary Search

also at 33 more

31

31.K-th Largest element in an array

Medium35 co.

Medium

Heaps

also at 34 more

32

32.Rotten Oranges

Medium39 co.

Medium

Arrays Graphs

also at 38 more

33

33.LFU Cache

Hard28 co.

Hard

Hashing Linked List

also at 27 more

34

34.Pacific Atlantic Water Flow

Medium6 co.

Medium

Graphs

also at 5 more

35

35.Daily Temperatures

Medium21 co.

Medium

also at 20 more

36

36.Two Sum

Easy58 co.

Easy

Arrays Hashing

also at 57 more

37

37.Largest Number

Medium9 co.

Medium

38.Letter Combinations of a Phone Number

also at 8 more

38

Medium34 co.

Medium

Recursion & Backtracking

also at 33 more

39

39.4 Sum

Medium25 co.

Medium

40.Check if LL is palindrome or not

also at 24 more

40

Medium18 co.

Medium

Linked List

also at 17 more

41

41.Bridges in graph

Hard4 co.

Hard

Graphs

also at 3 more

42

42.Product of Array Except Self

Medium19 co.

Medium

also at 18 more

43

43.Merge Intervals

Medium51 co.

Medium

44.Number of Visible People in a Queue

also at 50 more

44

Hard8 co.

Hard

also at 7 more

45

45.Gas Station

Medium14 co.

Medium

46.Longest Substring Without Repeating Characters

also at 13 more

46

Medium51 co.

Medium

47.Number of distinct islands

also at 50 more

47

Medium9 co.

Medium

Hashing Graphs

also at 8 more

48

48.Reverse Words in a String

Medium14 co.

Medium

49.Amount of Time for Binary Tree to Be Infected

also at 13 more

49

Medium5 co.

Medium

Binary Trees

also at 4 more

50

50.Best time to buy and sell stock

Medium45 co.

Medium