Companies

2.Maximum Running Time of N Computers

also at 10 more

2

Hard1 co.

Hard

Binary Search

also at 0 more

3

3.Find the Length of the Longest Common Prefix

Medium10 co.

Medium

Tries

also at 9 more

4

4.Finding Pairs With a Certain Sum

Medium2 co.

Medium

Design

also at 1 more

5

5.Subarrays with K Different Integers

Hard12 co.

Hard

7.Rotate matrix by 90 degrees

also at 11 more

6

6.Four Divisors

Medium1 co.

Medium

Mathematics

also at 0 more

7

Medium25 co.

Medium

9.Print the matrix in spiral manner

also at 24 more

8

8.Design File System

Medium6 co.

Medium

Tries

also at 5 more

9

Medium30 co.

Medium

10.Add two numbers in Linked List

also at 29 more

10

Medium38 co.

Medium

Linked List

also at 37 more

11

11.Count subarrays with given sum

Medium36 co.

Medium

Arrays Hashing

also at 35 more

12

12.Brightest Position on Street

Medium8 co.

Medium

Arrays Ordered Sets & Maps

also at 7 more

13

13.Number of Pairs of Strings With Concatenation Equal to Target

Medium1 co.

Medium

Hashing

also at 0 more

14

14.Number of Black Blocks

Medium5 co.

Medium

Hashing

also at 4 more

15

15.Simplify Path

Medium12 co.

Medium

Stack & Queues

also at 11 more

16

16.Minimum Time Difference

Medium3 co.

Medium

17.Non-overlapping Intervals

also at 2 more

17

Medium22 co.

Medium

Arrays Greedy Algorithms

also at 21 more

18

18.Merge Intervals

Medium51 co.

Medium

Greedy Algorithms

also at 50 more

19

19.Minimum Operations to Write the Letter Y on a Grid

Medium5 co.

Medium

Matrix

also at 4 more

20

20.Candy Crush

Medium10 co.

Medium

also at 9 more

21

21.Number of islands

Medium48 co.

Medium

22.Distribute Elements Into Two Arrays II

also at 47 more

22

Hard1 co.

Hard

Advanced Range Data Structures

also at 0 more

23

23.Count Positions on Street With Required Brightness

Medium2 co.

Medium

25.Number of Adjacent Elements With the Same Color

also at 1 more

24

24.Two Sum

Easy58 co.

Easy

Arrays Hashing

also at 57 more

25

Medium5 co.

Medium

26.Grumpy Bookstore Owner

also at 4 more

26

Medium3 co.

Medium

28.Palindromic Substrings

also at 2 more

27

27.LRU Cache

Medium52 co.

Medium

Hashing Linked List

also at 51 more

28

Medium8 co.

Medium

Dynamic Programming

also at 7 more

29

29.Largest rectangle in a histogram

Hard30 co.

Hard

Stack & Queues

also at 29 more

30

30.Count Prefix and Suffix Pairs I

Easy1 co.

Easy

Tries

also at 0 more

31

31.Valid Paranthesis Checker

Medium50 co.

Medium

Greedy Algorithms

also at 49 more

32

32.Fizz Buzz

Easy9 co.

Easy

33.Block Placement Queries

also at 8 more

33

Hard5 co.

Hard

Advanced Range Data Structures

also at 4 more

34

34.Flood fill algorithm

Medium9 co.

Medium

36.Number of Subarrays That Match a Pattern I

also at 8 more

35

35.Word ladder I

Medium27 co.

Medium

Hashing Graphs

also at 26 more

36

Medium3 co.

Medium

37.Longest Palindromic Substring

also at 2 more

37

Medium40 co.

Medium

Strings Dynamic Programming

also at 39 more

38

38.Count Nice Pairs in an Array

Medium3 co.

Medium

Hashing

also at 2 more

39

39.Minimum Absolute Difference Between Elements With Constraint

Medium5 co.

Medium

Binary Search

also at 4 more

40

40.Count Alternating Subarrays

Medium1 co.

Medium

Mathematics

also at 0 more

41

41.Remove Boxes

Hard4 co.

Hard

Dynamic Programming

also at 3 more

42

42.Best time to buy and sell stock

Medium45 co.

Medium

Dynamic Programming

also at 44 more

43

43.Restore the Array From Adjacent Pairs

Medium4 co.

Medium

44.Minimize Result by Adding Parentheses to Expression

also at 3 more

44

Medium3 co.

Medium