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Data Structures & Algorithms. Includes solutions for Cracking the Coding Interview 6th Edition

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Data Structures & Algorithms Repository

This is repository of data structures and algorithms written in JavaScript and Ruby. Some of the algorithms are from Cracking the Coding Interview by Gayle Laakmann McDowell .

Contributing

Contributions are welcome! Please read the Contributing guidelines and the Code of Conduct on how to contribute. This project is Licensed under the MIT License.

Ruby Instructions:

To run Ruby specs, execute the rspec command in the terminal

JavaScript Instructions:

To run JavaScript specs, execute the rake jasmine command in the terminal. Then open a web browser to http://localhost:8888/

Algorithms & Data Structures

Key
- (R) means Ruby
- (JS) means JavaScript
- (P) means Python
- (CtCI) means Cracking the Coding Interview
- (DP) means Dynamic Programming
  • Array - Binary Search Tree From Array (R)
  • Array - Contains Duplicate (JS)
  • Array - Difference Between Arrays (R)
  • Array - Find Single Number (R)
  • Array - Highest Product of 3 (JS)
  • Array - Longest Common Prefix (R)
  • Array - Majority Element (JS)
  • Array - Make Change (CtCI)(JS)(R)
  • Array - Maxiumum Subsequence (CtCI)(DP)(R)
  • Array - Merge Two Sorted Lists (JS)(R)
  • Array - Min Change Sum (CtCI)(DP)(R)
  • Array - Missing Number (CtCI)(R)
  • Array - Product of All Ints Except @ Index (JS)
  • Array - Quicksort (JS)
  • Array - Remove Value (JS)
  • Array - Rotate Array (R)
  • Array - Rotate Matrix (CtCI 1.7)(R)(P)
  • Array - Shuffle in Place (R)
  • Array - Stock Picker (JS)
  • Array - Subsets (JS)
  • Array - Summary Ranges (R)
  • Array - Transpose (JS)
  • Array - Traverse Spiral Matrix (R)
  • Array - Two Sum (R)
  • Array - Zero Matrix (CtCI 1.8)(R)(P)
  • Data Structure - Binary Tree (JS)(R)
  • Data Structure - Doubly Linked List (R)
  • Data Structure - Hash Table (JS)
  • Data Structure - Min Heap (R)
  • Data Structure - Queue (JS)
  • Data Structure - Queue with Two Stacks (CtCI)(JS)
  • Data Structure - Singly Linked List (R)
  • Data Structure - Stack (JS)(R)
  • Data Structure - Stack with Two Queues (CtCI)(JS)
  • Data Structure - Tree (JS)
  • Data Structure - Trie (JS)
  • Graph - Balanced Binary Tree (R)
  • Graph - Binary Tree Inorder Traversal (R)
  • Graph - Binary Tree Preorder Traversal (R)
  • Graph - Binary Tree to Linked List (R)
  • Graph - Breadth First Search (JS)(R)
  • Graph - Danny Search (R)
  • Graph - Depth First Search (JS)(R)
  • Graph - Dijkstras (R)
  • Graph - Invert Binary Tree (JS)(R)
  • Graph - Is Same Tree (JS)
  • Graph - Largest Internal Binary Search Tree (R)
  • Graph - Lowest Common Ancestor in BST (CtCI)(R)
  • Graph - Maximum Depth of Binary Tree (JS)(R)
  • Graph - Minimum Depth of Binary Tree (JS)(R)
  • Graph - Path Between Two Nodes (CtCI)(R)
  • Graph - Root to Leaf Paths (R)
  • Graph - Second Largest Value in Binary Tree (JS)
  • Graph - Symmetric Binary Tree (JS)
  • Graph - Topological Sort (R)
  • Graph - Tree Breadth First Search (R)
  • Graph - Tree Path Equals Sum (CtCI)(R)
  • Graph - Valid Binary Tree (R)
  • Linked List - Add Reverse Linked List Digits (CtCI)(R)
  • Linked List - Animal Shelter (CtCI 3.6)(R)
  • Linked List - Delete Kth Node in Linked List (R)
  • Linked List - Delete Node in Linked List (JS)
  • Linked List - Delete Middle Node in Linked List (CtCI 2.3)(R)
  • Linked List - Find Linked List Cycle (CtCI)(R)
  • Linked LIst - Intersection of two lists (CtCI 2.7)(R)
  • Linked List - Linked List Palindrome (CtCI)(R)
  • Linked List - Loop Detection (CtCI 2.8)(R)
  • Linked List - Palindrome (CtCI 2.6)(JS)(R)(R2)
  • Linked List - Partition Linked List (CtCI)(R)
  • Linked List - Return Kth to last node (CtCI 2.2)(R)
  • Linked List - Remove Duplicates in Linked List (CtCI 2.1)(R)
  • Linked List - Reverse Linked List (JS)
  • Linked List - Sum Lists (CtCI 2.5)(R)
  • Misc - Climbing Stairs (JS)
  • Misc - Count Primes (R)
  • Misc - Digital Root (JS)
  • Misc - Fibonacci Number (JS)
  • Misc - First Bad Version (R)
  • Misc - Hamming Weight (JS)
  • Misc - HiCal (JS)
  • Misc - Pascal's Triangle (R)
  • Misc - Power of 2 (JS)
  • Misc - Rate Limiter (R)
  • Misc - Seive of Erastenous (R)
  • Stack - Sort Stack (CtCI 3.5)(R)
  • String - Add Binary (R)
  • String - Anagrams (JS)(R)
  • String - Balanced Parens (JS)
  • String - String Compression (CtCI 1.6)(R)(P)
  • String - Caeser Cipher (R)
  • String - Encode URL (CtCI)(R)
  • String - Is Substring (CtCI)(R)
  • String - Isomorphic Strings (R)
  • String - One Edit Away (CtCI)(R)(P)
  • String - Permutation Palindrome (CtCI 1.4)(JS)(R)(P)
  • String - Permutation Strings (CtCI 1.2)(R)(P)
  • String - Remove Duplicates in Text (R)
  • String - Reverse Characters and String (CtCI)(R)
  • String - Roman Numeral -> Integer (JS)
  • String - String Rotation (CtCI 1.9)(R)
  • String - Substrings (JS)
  • String - Unique Characters (CtCI 1.1)(R)(P)
  • String - Valid Anagram (JS)