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Leetcode has more than 3525 coding questions.
But only a few make you learn the important patterns.
Here are 25 of my favorite questions that will help you pass tech interviews:
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Grab my interview cheatsheet: hungryminds.dev/my-ulti…
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Graphs:
0. Clone Graph: leetcode.com/problems/0…
1. Course Schedule: leetcode.com/problems/c…
2. 01 Matrix: leetcode.com/problems/0…
3. Number of Islands: leetcode.com/problems/n…
4. Rotting Oranges: leetcode.com/problems/r…
Arrays:
5. Insert Interval: leetcode.com/problems/i…
6. 3Sum: leetcode.com/problems/3…
7. Product of Array Except Self: leetcode.com/problems/p…
8. Combination Sum: leetcode.com/problems/c…
9. Merge Intervals: leetcode.com/problems/m…
Stacks:
10. Evaluate Reverse Polish Notation: leetcode.com/problems/e…
11. Min Stack: leetcode.com/problems/m…
12. Trapping Rain Water: leetcode.com/problems/t…
Binary Trees:
13. Binary Tree Level Order Traversal: lnkd.in/dM-VYbVB
14. Lowest Common Ancestor of a Binary Tree: leetcode.com/problems/l…
15. Serialize and Deserialize Binary Tree: leetcode.com/problems/s…
Dynamic Programming:
16. Maximum Subarray: leetcode.com/problems/m…
17. Coin Change: lnkd.in/d7zZRg7H
Binary Search:
18. Search in Rotated Sorted Array: leetcode.com/problems/s…
19. Time-Based Key-Value Store: leetcode.com/problems/t…
Strings:
20. Longest Substring Without Repeating Characters: leetcode.com/problems/l…
21. Minimum Window Substring: leetcode.com/problems/m…
Heap:
22. K Closest Points to Origin: leetcode.com/problems/k…
23. Find Median from Data Stream: leetcode.com/problems/f…
Recursion:
24. Permutations: leetcode.com/problems/p…
What are you studying right now?
