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Cracking the Coding Interview, 6th Edition

Cracking the Coding Interview, 6th Edition is here to help you through this process, teaching you what you need to know and enabling you to perform at your very best. I've coached and interviewed hundreds of software engineers. The result is this book.

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Solutions

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# Solution Tag Difficulty
01.01 Is Unique Array Easy
01.02 Check Permutation Array,String Easy
01.03 String to URL String Easy
01.04 Palindrome Permutation Hash Table,String Easy
01.05 One Away String,Dynamic Programming Medium
01.06 Compress String String Easy
01.07 Rotate Matrix Array Medium
01.08 Zero Matrix Array Medium
01.09 String Rotation String Easy
02.01 Remove Duplicate Node Linked List Easy
02.02 Kth Node From End of List Linked List,Two Pointers Easy
02.03 Delete Middle Node Linked List Easy
02.04 Partition List Linked List,Two Pointers Medium
02.05 Sum Lists Linked List,Math Medium
02.06 Palindrome Linked List Linked List Easy
02.07 Intersection of Two Linked Lists Linked List Easy
02.08 Linked List Cycle Linked List Medium
03.01 Three in One Design Easy
03.02 Min Stack Stack Easy
03.03 Stack of Plates Design Medium
03.04 Implement Queue using Stacks Stack Easy
03.05 Sort of Stacks Design Medium
03.06 Animal Shelter Design Easy
04.01 Route Between Nodes Graph Medium
04.02 Minimum Height Tree Tree,Depth-first Search Easy
04.03 List of Depth Tree,Breadth-first Search Medium
04.04 Check Balance Tree,Depth-first Search Easy
04.05 Legal Binary Search Tree Tree,Depth-first Search Medium
04.06 Successor Tree,Depth-first Search Medium
04.08 First Common Ancestor Tree Medium
04.09 BST Sequences Tree,Dynamic Programming Hard
04.10 Check SubTree Tree Medium
04.12 Paths with Sum Tree,Depth-first Search Medium
05.01 Insert Into Bits Bit Manipulation Easy
05.02 Bianry Number to String String Medium
05.03 Reverse Bits Bit Manipulation Easy
05.04 Closed Number Bit Manipulation Medium
05.06 Convert Integer Bit Manipulation Easy
05.07 Exchange Bit Manipulation Easy
05.08 Draw Line Array Medium
08.01 Three Steps Problem Dynamic Programming Easy
08.02 Robot in a Grid Dynamic Programming Medium
08.03 Magic Index Array,Binary Search Easy
08.04 Power Set Bit Manipulation,Array,Backtracking Medium
08.05 Recursive Mulitply Recursion Medium
08.06 Hanota Recursion Easy
08.07 Permutation I Backtracking Medium
08.08 Permutation II Backtracking Medium
08.09 Bracket String,Backtracking Medium
08.10 Color Fill Depth-first Search Easy
08.11 Coin Dynamic Programming Medium
08.12 Eight Queens Backtracking Hard
08.13 Pile Box Dynamic Programming,Backtracking Hard
08.14 Boolean Evaluation Stack,String Medium
10.01 Sorted Merge Array,Two Pointers Easy
10.02 Group Anagrams Hash Table,String Medium
10.03 Search Rotate Array Array,Binary Search Medium
10.05 Sparse Array Search Binary Search Easy
10.09 Sorted Matrix Search Two Pointers,Binary Search,Divide and Conquer Medium
10.10 Rank from Stream Medium
10.11 Peaks and Valleys Medium
16.01 Swap Numbers Bit Manipulation,Math Medium
16.02 Words Frequency Design,Hash Table Medium
16.03 Intersection Geometry,Math Hard
16.04 Tic-Tac-Toe Array Medium
16.05 Factorial Zeros Math Easy
16.06 Smallest Difference Array,Two Pointers Medium
16.07 Maximum Bit Manipulation,Math Easy
16.08 English Int Math,String Hard
16.09 Operations Design Medium
16.10 Living People Array Medium
16.11 Diving Board Recursion,Memoization Easy
16.13 Bisect Squares Geometry Medium
16.14 Best Line Geometry,Hash Table Medium
16.15 Master Mind Array Easy
16.16 Sub Sort Sort,Array Medium
16.17 Contiguous Sequence Array,Divide and Conquer,Dynamic Programming Easy
16.18 Pattern Matching String Medium
16.19 Pond Sizes Depth-first Search,Breadth-first Search Medium
16.20 T9 Array Medium
16.21 Sum Swap Sort,Array Medium
16.22 Langtons Ant Array Medium
16.24 Pairs With Sum Array,Hash Table Medium
16.25 LRU Cache Design Medium
16.26 Calculator String Medium
17.01 Add Without Plus Bit Manipulation Easy
17.04 Missing Number Bit Manipulation,Array,Math Easy
17.05 Find Longest Subarray Array Medium
17.06 Number Of 2s In Range Math,Dynamic Programming Medium
17.07 Baby Names Depth-first Search,Breadth-first Search,Union Find Medium
17.08 Circus Tower Sort,Binary Search,Dynamic Programming Medium
17.09 Get Kth Magic Number Heap,Queue,Math Medium
17.10 Find Majority Element Bit Manipulation,Array,Divide and Conquer Easy
17.11 Find Closest Two Pointers,String Medium
17.12 BiNode Tree,Binary Search Tree,Recursion Easy
17.13 Re-Space Memoization,String Medium
17.14 Smallest K Heap,Sort,Divide and Conquer Medium
17.15 Longest Word String Medium
17.16 The Masseuse Dynamic Programming Easy
17.17 Multi Search Trie,String Medium
17.18 Shortest Supersequence Sliding Window Medium
17.19 Missing Two Array,Math Hard
17.20 Continuous Median Heap Hard
17.21 Volume of Histogram Stack,Array,Two Pointers Hard
17.22 Word Transformer Depth-first Search,Breadth-first Search,Array,String Medium
17.23 Max Black Square Dynamic Programming Medium
17.24 Max Submatrix Dynamic Programming Hard
17.25 Word Rectangle Hard
17.26 Sparse Similarity Hash Table Hard

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