Last Updated: 15 Mar, 2026

Book - Cracking The Coding Interview Questions

Every developer aims to pass the Facebook coding interview. Many Facebook coding questions on Coding Ninjas are specially designed to crack facebook interview questions. Be a ninja coder by acing all the Facebook coding Questions and thus land your dream job.

Problem Title

Exp

Difficulty

Avg. time

Attempted

Upvotes

40

Easy

20 mins

18.1k

223

Search In Rotated Sorted Array

80

Moderate

30 mins

49.5k

384

Intersection of Two Linked Lists

40

Easy

25 mins

54k

324

Ways To Make Coin Change

80

Moderate

20 mins

90.1k

208

Find Number Of Islands

80

Moderate

34 mins

12.2k

129

Trapping Rain Water

80

Moderate

15 mins

33.2k

223

Maximum Subarray Sum

80

Moderate

35 mins

289.8k

1.5 k

LRU Cache Implementation

80

Moderate

25 mins

12.2k

103

120

Hard

55 mins

20.2k

143

Count Ways To Reach The N-th Stairs

80

Moderate

30 mins

94k

593

Palindrome Linked List

40

Easy

20 mins

26.2k

188

80

Moderate

25 mins

32.8k

80

Add Two Numbers As Linked Lists ll

80

Moderate

10 mins

11.5k

255

80

Moderate

30 mins

4.3k

41

40

Easy

10 mins

54.4k

1.7 k

Search In A Row Wise And Column Wise Sorted Matrix

80

Moderate

15 mins

11.7k

74

Trailing Zeros in Factorial

80

Moderate

15 mins

3.1k

38

Majority element

40

Easy

15 mins

46.3k

232

Swap Number Without Temporary Variable

40

Easy

15 mins

5.5k

21

Subtree of Another Tree

40

Easy

10 mins

3.7k

43

Compress the String

80

Moderate

25 mins

3.3k

39

Tic-Tac-Toe Winner

40

Easy

20 mins

3k

54

Generate all parenthesis

80

Moderate

30 mins

9.7k

78

Predecessor and Successor In BST

80

Moderate

25 mins

4.1k

29

Check If Path Exists

40

Easy

10 mins

1.6k

11