Last Updated: 31 Jan, 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

17.9k

222

Search In Rotated Sorted Array

80

Moderate

30 mins

49.3k

384

Intersection of Two Linked Lists

40

Easy

25 mins

53.8k

324

Ways To Make Coin Change

80

Moderate

20 mins

89.8k

207

Find Number Of Islands

80

Moderate

34 mins

12.1k

128

Trapping Rain Water

80

Moderate

15 mins

33k

221

Maximum Subarray Sum

80

Moderate

35 mins

288.7k

1.5 k

LRU Cache Implementation

80

Moderate

25 mins

12.1k

103

120

Hard

55 mins

20.1k

143

Count Ways To Reach The N-th Stairs

80

Moderate

30 mins

93.3k

592

Palindrome Linked List

40

Easy

20 mins

26.1k

188

80

Moderate

25 mins

32.5k

79

Add Two Numbers As Linked Lists ll

80

Moderate

10 mins

11.4k

253

80

Moderate

30 mins

4.2k

41

40

Easy

10 mins

53.9k

1.7 k

Search In A Row Wise And Column Wise Sorted Matrix

80

Moderate

15 mins

11.6k

74

Trailing Zeros in Factorial

80

Moderate

15 mins

3.1k

38

Majority element

40

Easy

15 mins

45.9k

231

Swap Number Without Temporary Variable

40

Easy

15 mins

5.4k

21

Subtree of Another Tree

40

Easy

10 mins

3.7k

42

Compress the String

80

Moderate

25 mins

3.2k

39

Tic-Tac-Toe Winner

40

Easy

20 mins

2.9k

54

Generate all parenthesis

80

Moderate

30 mins

9.6k

78

Predecessor and Successor In BST

80

Moderate

25 mins

4k

29

Check If Path Exists

40

Easy

10 mins

1.6k

11