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Introduction
First Chapter
Sorting Summary
LC 3 Longest Substring Without Repeating Characters
LC 5 Longest Palindromic Substring(M)
LC 17 Letter Combinations of a Phone Number(M)
LC 31 Next Permutation(M)
LC 44 Wildcard Matching(H)
LC 46 Permutations(M)
LC 47 Permutations II(M)
LC 53 Maximum Subarray(S)
LC 54 Spiral Matrix(M)
LC 60 Permutation Sequence(M)
LC 62 Unique Paths(M)
LC 63 Unique Paths II(M)
LC 64 Minimum Path Sum(M)
LC 79 Word Search(M)
LC 127 Word Ladder(M)
LC 131 Parlindrome Partitioning(M)
LC 152 Maximum Product Subarray(M)
LC 189 Rotate Array(S)
LC 186 Reverse Words in a String II(M)
LC 209 Minimum Size Subarray Sum(M)
LC 222 Count Complete Tree Nodes(M)
LC 287 Find the Duplicate Number(M)
LC 322 Coin Change(M)
LC 329 Longest Increasing Path in a Matrix(H)
LC 366 Find Leaves of Binary Tree(M)
LC 396 Rotate Function(M)
LC 435 Non-overlapping Intervals(M)
LC 442 Find All Duplicates in an Array(M)
LC 451 Sort Characters By Frequency(M)
LC 479 Largest Palindrome Product(M)
LC 518 Coin Change 2(M)
HR-Pairs
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A General Approach to Backtracking Questions
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