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July LeetCode Challenge

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1. Arranging Coins
1. Arranging Coins
 
 
10. Flatten a Multilevel Doubly Linked List
10. Flatten a Multilevel Doubly Linked List
 
 
11. Subsets
11. Subsets
 
 
12. Reverse Bits
12. Reverse Bits
 
 
13. Same Tree
13. Same Tree
 
 
14. Angle Between Hands of a Clock
14. Angle Between Hands of a Clock
 
 
15. Reverse Words in a String
15. Reverse Words in a String
 
 
17. Top K Frequent Elements
17. Top K Frequent Elements
 
 
18. Course Schedule II
18. Course Schedule II
 
 
19. Add Binary
19. Add Binary
 
 
2. Binary Tree Level Order Traversal II
2. Binary Tree Level Order Traversal II
 
 
20. Remove Linked List Elements
20. Remove Linked List Elements
 
 
21. Word Search
21. Word Search
 
 
22. Binary Tree Zigzag Level Order Traversal
22. Binary Tree Zigzag Level Order Traversal
 
 
23. Single Number III
23. Single Number III
 
 
24. All Paths From Source to Target
24. All Paths From Source to Target
 
 
25. Find Minimum in Rotated Sorted Array II
25. Find Minimum in Rotated Sorted Array II
 
 
26. Add Digits
26. Add Digits
 
 
27. Construct Binary Tree from Inorder and Postorder Traversal
27. Construct Binary Tree from Inorder and Postorder Traversal
 
 
28. Task Scheduler
28. Task Scheduler
 
 
29. Best Time to Buy and Sell Stock with Cooldown
29. Best Time to Buy and Sell Stock with Cooldown
 
 
3. Prison Cells After N Days
3. Prison Cells After N Days
 
 
30. Word Break II
30. Word Break II
 
 
31. Climbing Stairs
31. Climbing Stairs
 
 
4. Ugly Number II
4. Ugly Number II
 
 
5. Hamming Distance
5. Hamming Distance
 
 
6. Plus One
6. Plus One
 
 
7. Island Perimeter
7. Island Perimeter
 
 
8. 3 Sum
8. 3 Sum
 
 
9. Maximum Width of Binary Tree
9. Maximum Width of Binary Tree
 
 
readme.md
readme.md
 
 

readme.md

July LeetCode Challenge 2020

# Problem Statement Solution Related Topics Difficulty
Day 1 Arranging Coins View Math, Binary Search Easy
Day 2 Binary Tree Level Order Traversal II View Tree, BFS Easy
Day 3 Prison Cells After N Days View Hashing Medium
Day 4 Ugly Number II View Math, DP Medium
Day 5 Hamming Distance View Bit Manipulation Easy
Day 6 Plus One View Array Easy
Day 7 Island Perimeter View Array Easy
Day 8 3 Sum View Array, Two Pointers Medium
Day 9 Maximum Width of Binary Tree View Tree Medium
Day 10 Flatten a Multilevel Doubly Linked List View Linked List Medium
Day 11 Subsets View Array, Backtracking, Bit Manipulation Medium
Day 12 Reverse Bits View Bit Manipulation Easy
Day 13 Same Tree View Tree Medium
Day 14 View Easy
Day 15 View Easy