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leetcode
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binary search
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two pointers
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1. Two Sum.py
1. Two Sum.py
1. Two sum.cpp
1. Two sum.cpp
10. Regular Expression Matching.py
10. Regular Expression Matching.py
102. Binary Tree Level Order Traversal.py
102. Binary Tree Level Order Traversal.py
1073.cpp
1073.cpp
111. Minimum Depth of Binary Tree.py
111. Minimum Depth of Binary Tree.py
118. Pascal's Triangle.cpp
118. Pascal's Triangle.cpp
12. Integer to Roman.cpp
12. Integer to Roman.cpp
121. Best Time to Buy and Sell Stock.cpp
121. Best Time to Buy and Sell Stock.cpp
122. Best Time to Buy and Sell Stock II.cpp
122. Best Time to Buy and Sell Stock II.cpp
13. Roman to Integer.cpp
13. Roman to Integer.cpp
13. Roman to Integer.py
13. Roman to Integer.py
15. 3Sum.py
15. 3Sum.py
15.Three Sum.cpp
15.Three Sum.cpp
152.Maximum Product Subarray.cpp
152.Maximum Product Subarray.cpp
153. Find Minimum in Rotated Sorted Array.py
153. Find Minimum in Rotated Sorted Array.py
169. Majority Element.cpp
169. Majority Element.cpp
189.Rotate Array.cpp
189.Rotate Array.cpp
214. Shortest Palindrome.py
214. Shortest Palindrome.py
217.Contains Duplicate.cpp
217.Contains Duplicate.cpp
219. Contains Duplicate II.cpp
219. Contains Duplicate II.cpp
22. Generate Parentheses.py
22. Generate Parentheses.py
228. Summary Ranges.cpp
228. Summary Ranges.cpp
238. Product of Array Except Self.cpp
238. Product of Array Except Self.cpp
247.Strobogrammatic Number II.cpp
247.Strobogrammatic Number II.cpp
248.Strobogrammatic Number III.cpp
248.Strobogrammatic Number III.cpp
259. 3Sum Smaller.cpp
259. 3Sum Smaller.cpp
261. Graph Valid Tree.cpp
261. Graph Valid Tree.cpp
283.Move Zeroes.cpp
283.Move Zeroes.cpp
33. Search in Rotated Sorted Array.py
33. Search in Rotated Sorted Array.py
368. Largest Divisible Subset.cpp
368. Largest Divisible Subset.cpp
370. Range Addition.cpp
370. Range Addition.cpp
375. Guess Number Higher or Lower II.py
375. Guess Number Higher or Lower II.py
4. Median of Two Sorted Arrays.cpp
4. Median of Two Sorted Arrays.cpp
413.cpp
413.cpp
42.Trapping Rain Water.cpp
42.Trapping Rain Water.cpp
44. Wildcard Matching.py
44. Wildcard Matching.py
443. String Compression.py
443. String Compression.py
46. Permutations.py
46. Permutations.py
47. Permutations II.py
47. Permutations II.py
48. Rotate Image.cpp
48. Rotate Image.cpp
53.Maximum Subarray.cpp
53.Maximum Subarray.cpp
54. Spiral Matrix.cpp
54. Spiral Matrix.cpp
66. Plus One.cpp
66. Plus One.cpp
768.cpp
768.cpp
769.cpp
769.cpp
79. Word Search.cpp
79. Word Search.cpp
Maximum Subarray II.cpp
Maximum Subarray II.cpp
Maximum Subarray.cpp
Maximum Subarray.cpp
Minimum Subarray.cpp
Minimum Subarray.cpp
Note.txt
Note.txt
README.md
README.md
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leetcode
to pay attention: 42
Mathematically tricky: 375. Guess Number Higher or Lower II
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