200 Leetcode Challenge - Coding Interview

Course Info

Reviews

➣ 1 Year Access with Dynamically Updated Content.
➣ Crack Internal Coding Test
➣ Weekly Doubt Clearing Classes.

What Will You Learn?

Problem-solving is crucial for FAANG (Facebook, Amazon, Apple, Netflix, Google) interviews because these companies have a reputation for conducting rigorous technical interviews. Problem-solving skills are tested to evaluate a candidate's ability to think critically, analyze complex scenarios, and develop efficient solutions.

Course Content

1. Lesson 1

200. Number Of Islands | Medium

47:14
127. Word ladder | Hard

25:29
1.3. Connected Components

08:39
1.4. Edges In Graph

11:17

2. Lesson 2

208. Implement Trie (Prefix Tree) | Medium

50:54
211. Design Add and Search Words Data Structure | Medium

32:46
676. Implement Magic Dictionary | Medium

21:11

3. Lesson 3

1046. Last Stone Weight | Easy

01:02:57
215. Kth Largest Element In An Array | Medium

22:09
973.Kth Closest Point To Origin | Medium

18:06

4. Lesson 4

94. Binary Tree Inorder Traversal | Easy

37:52
103. Binary Tree ZigZag Level Order Traversal | Medium

36:28
543. Diameter Of Binary Tree | Easy

31:33
104. Maximum Depth Of Binary Tree | Easy

15:02

5. Lesson 5

73. Set Matrix Zeroes | Medium

01:03:01
146. LRU Cache | Medium

35:04
380. Insert Delete Get Random O(1) | Medium

16:28

6. Lesson 6

641. Design Circular Deque | Medium

22:26
1352. Product Of Last K Numbers | Medium

19:40
232. Implement Queue Using Stack | Easy

38:52
6.4. Sliding Window Maximum

23:55

7. Lesson 7

7.1. Bucket Sort

19:15
7.2. Radix Sort To Sort String

03:00
7.3. Radix Sort

29:26
7.4. Sorting Candies Problem and Count Sort

26:36

8. Lesson 8

921. Minimum Add To Make Parentheses Valid | Medium

20:35
1249. Minimum Remove To Make Valid Parentheses | Medium

20:46
84. Largest Rectangle In Histogram | Hard

39:51
20. Valid Parentheses | Easy

20:41

9. Lesson 9

20. Problem On Binary Search | Medium

20:41
34. Find First and Last Position Of Element In Sorted Array | Medium

15:08
162. Find Peak Element | Medium

06:29
852. Peak Index In a Mountain Array | Medium

06:14
704. Binary Search | Easy

16:37
4. Median Of Two Sorted Arrays | Hard

31:17

11. Lesson 11

69. Sqrt(x) | Easy

01:24:16

12. Lesson 12

1. Two sum | Easy

21:30
68. Binary search and median of two sorted arrays | Hard

10:52
11 .Container with most water | Medium

21:23
49. Group anagrams | Medium

30:33

13. Lesson 13

73. Set Matrix Zeroes | Medium

32:10
13.2. Valid Sudoku

33:09
42. Trapping Rain Water | Hard

33:09

14. Lesson 14

122. Best time to buy and sell stocks | Medium

26:54
154. Find minimum in rotated sorted array | hard

30:02
138. Product of array except self | Medium

23:16

15. Lesson 15

135. Candy problem | Hard

24:36
303. Range sum query immutable | Easy

22:33
13. Roman to integer | Easy

22:02
75. Sort colors | Medium

19:38

16. Lesson 16

75. Sort colors | Medium

19:38
3. Longest Substring Without Repeating Characters | Medium

26:45
904. Fruit into Baskets | Medium

25:46
68. Text Justification | Hard

32:17

17. Lesson 17

66. Plus One | Easy

17:24
66. Plus One | Easy

35:08
560. Subarray Sum Equals k | Medium

31:17
41. First Missing Positive | Hard

26:41

18. Lesson 18

202. Happy Number | Easy

21:44
202. Happy Number II | Easy

32:14
707. Design Linked List | Medium

48:49

19. Lesson 19

328. Odd Event Linked List | Medium

19:42
234. Palindrome Linked List | Easy

24:04
725. Split linked list in parts | Medium

18:58
19.4. Copy list with random pointer

21:17

20. Lesson 20

146. LRU Cache | Medium

25:21
Leetcode 382. Swapping Nodes In Linked List

14:47
206. Reverse Linked List | Medium

29:45
382. Linked-List-Random-Node | Medium

22:09

21. Lesson 21

203. Remove Linked List Elements | Easy

20:28
82. Remove Duplicates From Sorted List | Medium

23:34
341. Flatten Nested List Iterator | Medium

23:42
430. Flatten A Multilevel Doubly Linked List | Medium

24:03

22. Lesson 22

56. Set Matrix Zeroes | Medium

27:42
496. Merge Intervals | Medium

26:56
496. Next Greater Element I | Easy

27:49
6. Zig Zag Conversion | Medium

32:31

23. Lesson 23

121. Best Time To Buy And Sell Stocks | Easy

17:38
442. Find All Duplicates In An Array | Medium

20:13
387. First Unique Character In A String | Easy

15:20
695. Max Area Of Island | Medium

21:52

24. Lesson 24

1290. Convert binary number in a linked list to integer | Easy

18:04
147. Insertion Sort List | Medium

25:31
61. Rotate list | Medium

22:54

25. Lesson 25

70. Climbing stairs | Easy

31:48
104. Maximum depth of binary tree | Easy

13:33
75. Sort colors | Medium

17:34
62. Unique paths | Medium

24:30

26. Lesson 26

102. Binary tree level order traversal | Medium

11:12
91. Decode Ways | Medium

33:40
116. Populating next right pointers in each node | Medium

12:00
42. Trapping Rain Water | Hard

24:05

27. Lesson 27

388. Longest absolute file path | Medium

35:19
155. Min stack | Medium

30:10
20. Valid parentheses | Easy

20:25

28. Lesson 28

28.1. Codeforce Minimum Possible LCM Tree

48:24
28.2. Codeforce Parsa’s Humongous tree problem

40:48

30. Lesson 30

103. Zig Zag Level Order Traversal | Medium

20:58
98. Validate Binary Search Tree | Medium

17:43
124. Binary Tree Maximum Path Sum | Hard

25:01
1373. Maximum Sum BST in Binary Tree | Hard

21:52
199. Binary Tree Right Side View | Medium

15:11
199. Binary Tree Left Side View | Medium

03:28

31. Lesson 31

31.1 Symmetric Trees

17:55
103. Binary Tree Zigzag Level Order Traversal | Medium

22:57
113. Path Sum II | Medium

18:41
113. Binary Tree Maximum Path Sum | Medium

18:41

32. Lesson 32

32.1 Daily Temperatures Problem

21:59
32.2 Design Add and Search Words Data Structure

29:11
32.3 Distribute Coins in a Binary Tree

24:05

33. Lesson 33

33.1 Rotting Oranges

33:43
33.2 Clone Graph

22:05
33.3 Best Time To Buy and Sell Stock III

23:22

Resume

Resume Building

59:23

Student Ratings & Reviews

5.0

Total 8 Ratings

8 Ratings

0 Rating

Siddharth Rao

1 month ago

Each question comes with a step-by-step solution, making it easier to understand different problem-solving techniques.

Harsh Vardhan

1 month ago

A good mix of commonly asked coding interview problems. The explanations are clear and easy to follow.

Sneha Bhatia

1 month ago

Solving these problems daily helped me improve my logical thinking and coding speed.

Rajat Saxena

1 month ago

A must-have for anyone preparing for coding rounds in tech companies. Covers important LeetCode-style questions.

Tanisha Pillai

1 month ago

A useful resource for interview preparation. Solving these problems regularly improved my confidence in coding rounds.

Mei Wong

1 month ago

I completed the DSA in C++ course first, and this LeetCode problem set helped me apply those concepts effectively.

Ahmed Hassan

1 month ago

This course is helpful for those preparing for coding interviews. The problems are structured well, covering different difficulty levels.

Lucas Moretti

1 month ago

A good collection of coding problems commonly asked in interviews. The explanations are simple and easy to follow.

About Course

What Will You Learn?

Course Content

1. Lesson 1

200. Number Of Islands | Medium

127. Word ladder | Hard

1.3. Connected Components

1.4. Edges In Graph

2. Lesson 2

208. Implement Trie (Prefix Tree) | Medium

211. Design Add and Search Words Data Structure | Medium

676. Implement Magic Dictionary | Medium

3. Lesson 3

1046. Last Stone Weight | Easy

215. Kth Largest Element In An Array | Medium

973.Kth Closest Point To Origin | Medium

4. Lesson 4

94. Binary Tree Inorder Traversal | Easy

103. Binary Tree ZigZag Level Order Traversal | Medium

543. Diameter Of Binary Tree | Easy

104. Maximum Depth Of Binary Tree | Easy

5. Lesson 5

73. Set Matrix Zeroes | Medium

146. LRU Cache | Medium

380. Insert Delete Get Random O(1) | Medium

6. Lesson 6

641. Design Circular Deque | Medium

1352. Product Of Last K Numbers | Medium

232. Implement Queue Using Stack | Easy

6.4. Sliding Window Maximum

7. Lesson 7

7.1. Bucket Sort

7.2. Radix Sort To Sort String

7.3. Radix Sort

7.4. Sorting Candies Problem and Count Sort

8. Lesson 8

921. Minimum Add To Make Parentheses Valid | Medium

1249. Minimum Remove To Make Valid Parentheses | Medium

84. Largest Rectangle In Histogram | Hard

20. Valid Parentheses | Easy

9. Lesson 9

20. Problem On Binary Search | Medium

34. Find First and Last Position Of Element In Sorted Array | Medium

162. Find Peak Element | Medium

852. Peak Index In a Mountain Array | Medium

704. Binary Search | Easy

4. Median Of Two Sorted Arrays | Hard

11. Lesson 11

69. Sqrt(x) | Easy

12. Lesson 12

1. Two sum | Easy

68. Binary search and median of two sorted arrays | Hard

11 .Container with most water | Medium

49. Group anagrams | Medium

13. Lesson 13

73. Set Matrix Zeroes | Medium

13.2. Valid Sudoku

42. Trapping Rain Water | Hard

14. Lesson 14

122. Best time to buy and sell stocks | Medium

154. Find minimum in rotated sorted array | hard

138. Product of array except self | Medium

15. Lesson 15

135. Candy problem | Hard

303. Range sum query immutable | Easy

13. Roman to integer | Easy

75. Sort colors | Medium

16. Lesson 16

75. Sort colors | Medium

3. Longest Substring Without Repeating Characters | Medium

904. Fruit into Baskets | Medium

68. Text Justification | Hard

17. Lesson 17

66. Plus One | Easy

66. Plus One | Easy

560. Subarray Sum Equals k | Medium

41. First Missing Positive | Hard

18. Lesson 18

202. Happy Number | Easy

202. Happy Number II | Easy