Python Data Structures & Algorithms + LEETCODE Exercises

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DSA for Cracking the Coding Interview. Animated Examples for Faster Learning and Deeper Understanding.

01 - Start Here

001 Overview (Please Watch)

002 Code Editor

002 additional-install-information.zip

external-links.txt

02 - Big O

001 Big O Intro

002 Big O Worst Case

003 Big O O(n)

003 o-n.zip

004 Big O Drop Constants

004 drop-const.zip

005 Big O O(n^2)

005 o-n-2.zip

005 o-n-3.zip

006 Big O Drop Non-Dominants

006 non-dom.zip

007 Big O O(1)

007 o-1.zip

008 Big O O(log n)

009 Big O Different Terms for Inputs

009 different-terms.zip

010 Big O Lists

011 Big O Wrap Up

external-links.txt

03 - Classes And Pointers

001 Classes

001 cookie.zip

002 Pointers

002 pointers.zip

04 - Linked Lists

001 Linked List Intro

002 LL Big O

002 LL-vs-Lists-Big-O.pdf

003 LL Under the Hood

004 LL Constructor

004 exercise-ll-constructor.zip

004 solution-ll-constructor.zip

005 Coding Exercises (Important)

006 LL Print List

006 ll-print-list.zip

007 LL Append

007 exercise-ll-append.zip

007 solution-ll-append.zip

008 LL Pop Intro

009 LL Pop Code

009 exercise-ll-pop.zip

009 solution-ll-pop.zip

010 LL Prepend

010 exercise-ll-prepend.zip

010 solution-ll-prepend.zip

011 LL Pop First

011 exercise-ll-pop-first.zip

011 solution-ll-pop-first.zip

012 LL Get

012 exercise-ll-get.zip

012 solution-ll-get.zip

013 LL Set

013 exercise-ll-set.zip

013 solution-ll-set.zip

014 LL Insert

014 exercise-ll-insert.zip

014 solution-ll-insert.zip

015 LL Remove

015 exercise-ll-remove.zip

015 solution-ll-remove.zip

016 LL Reverse

016 exercise-ll-reverse.zip

016 solution-ll-reverse.zip

05 - LL Coding Exercises

Coding Exercise 1 LL Constructor.txt

Coding Exercise 2 LL Append.txt

Coding Exercise 3 LL Pop.txt

Coding Exercise 4 LL Prepend.txt

Coding Exercise 5 LL Pop First.txt

Coding Exercise 6 LL Get.txt

Coding Exercise 7 LL Set.txt

Coding Exercise 8 LL Insert.txt

Coding Exercise 9 LL Remove.txt

Coding Exercise 10 LL Reverse.txt

06 - LL Interview Leetcode Exercises

Coding Exercise 11 LL Find Middle Node (⚡Interview Question).txt

Coding Exercise 12 LL Has Loop (⚡Interview Question).txt

Coding Exercise 13 LL Remove Duplicates (⚡Interview Question).txt

Coding Exercise 14 LL Find Kth Node From End (⚡Interview Question).txt

Coding Exercise 15 LL Reverse Between (⚡Interview Question).txt

Coding Exercise 16 LL Partition List (⚡Interview Question).txt

07 - Doubly Linked Lists

001 DLL Constructor

001 exercise-dll-constructor.zip

001 solution-dll-constructor.zip

002 DLL Append

002 exercise-dll-append.zip

002 solution-dll-append.zip

003 DLL Pop

003 exercise-dll-pop.zip

003 solution-dll-pop.zip

004 DLL Prepend

004 exercise-dll-prepend.zip

004 solution-dll-prepend.zip

005 DLL Pop First

005 exercise-dll-pop-first.zip

005 solution-dll-pop-first.zip

006 DLL Get

006 exercise-dll-get.zip

006 solution-dll-get.zip

007 DLL Set

007 exercise-dll-set.zip

007 solution-dll-set.zip

008 DLL Insert

008 exercise-dll-insert.zip

008 solution-dll-insert.zip

009 DLL Remove

009 exercise-dll-remove.zip

009 solution-dll-remove.zip

08 - DLL Coding Exercises

Coding Exercise 17 DLL Constructor.txt

Coding Exercise 18 DLL Append.txt

Coding Exercise 19 DLL Pop.txt

Coding Exercise 20 DLL Prepend.txt

Coding Exercise 21 DLL Pop First.txt

Coding Exercise 22 DLL Get.txt

Coding Exercise 23 DLL Set.txt

Coding Exercise 24 DLL Insert.txt

Coding Exercise 25 DLL Remove.txt

09 - DLL Interview Leetcode Exercises

Coding Exercise 26 DLL Swap First and Last (⚡Interview Question).txt

Coding Exercise 27 DLL Reverse (⚡Interview Question).txt

Coding Exercise 28 DLL Palindrome Checker (⚡Interview Question).txt

Coding Exercise 29 DLL Swap Nodes in Pairs (⚡Interview Question).txt

10 - Stacks And Queues

001 Stack Intro

002 Stack Constructor

002 exercise-stack-constructor.zip

002 solution-stack-constructor.zip

003 Stack Push

003 exercise-stack-push.zip

003 solution-stack-push.zip

004 Stack Pop

004 exercise-stack-pop.zip

004 solution-stack-pop.zip

005 Queue Intro

006 Queue Constructor

006 exercise-queue-constructor.zip

006 solution-queue-constructor.zip

007 Queue Enqueue

007 exercise-queue-enqueue.zip

007 solution-queue-enqueue.zip

008 Queue Dequeue

008 exercise-queue-dequeue.zip

008 solution-queue-dequeue.zip

11 - S And Q Coding Exercises

Coding Exercise 30 Stack Constructor.txt

Coding Exercise 31 Stack Push.txt

Coding Exercise 32 Stack Pop.txt

Coding Exercise 33 Queue Constructor.txt

Coding Exercise 34 Queue Enqueue.txt

Coding Exercise 35 Queue Dequeue.txt

12 - S And Q Interview Leetcode Exercises

Coding Exercise 36 Stack Implement Stack Using a List ⚡Interview Question.txt

Coding Exercise 37 Stack Push for Stack That Uses List (⚡Interview Question).txt

Coding Exercise 38 Stack Pop for Stack That Uses List (⚡Interview Question).txt

Coding Exercise 39 Stack Parentheses Balanced (⚡Interview Question).txt

Coding Exercise 40 Stack Reverse String (⚡Interview Question).txt

Coding Exercise 41 Stack Sort Stack (⚡Interview Question).txt

Coding Exercise 42 Queue Using Stacks Enqueue (⚡Interview Question).txt

Coding Exercise 43 Queue Using Stacks Dequeue (⚡Interview Question).txt

13 - Trees

001 Trees Intro And Terminology

002 Binary Search Trees Example

003 BST Big O

004 BST Constructor

004 exercise-bst-constructor.zip

004 solution-bst-constructor.zip

005 BST Insert - Intro

006 BST Insert - Code

006 exercise-bst-insert.zip

006 solution-bst-insert.zip

007 BST Contains

007 exercise-bst-contains.zip

007 solution-bst-contains.zip

14 - BST Coding Exercises

Coding Exercise 44 BST Constructor.txt

Coding Exercise 45 BST Insert.txt

Coding Exercise 46 BST Contains.txt

15 - Hash Tables

001 Hash Table Intro

002 HT Collisions

003 HT Constructor

003 exercise-ht-constructor.zip

003 solution-ht-constructor.zip

004 HT Set

004 exercise-ht-set.zip

004 solution-ht-set.zip

005 HT Get

005 exercise-ht-get.zip

005 solution-ht-get.zip

006 HT Keys

006 exercise-ht-keys.zip

006 solution-ht-keys.zip

007 HT Big O

008 HT Interview Question

008 ht-itemincommon1.zip

008 ht-itemincommon2.zip

16 - HT Coding Exercises

Coding Exercise 47 HT Constructor.txt

Coding Exercise 48 HT Set.txt

Coding Exercise 49 HT Get.txt

Coding Exercise 50 HT Keys.txt

17 - HT Interview Leetcode Exercises

001 Introduction to Sets.html

Coding Exercise 51 HT Item In Common (⚡Interview Question).txt

Coding Exercise 52 HT Find Duplicates (⚡Interview Question).txt

Coding Exercise 53 HT First Non-Repeating Character (⚡Interview Question).txt

Coding Exercise 54 HT Group Anagrams (⚡Interview Question).txt

Coding Exercise 55 HT Two Sum (⚡Interview Question).txt

Coding Exercise 56 HT Subarray Sum (⚡Interview Question).txt

Coding Exercise 57 Set Remove Duplicates (⚡Interview Question).txt

Coding Exercise 58 Set Has Unique Chars (⚡Interview Question).txt

Coding Exercise 59 Set Find Pairs (⚡Interview Question).txt

Coding Exercise 60 Set Longest Consecutive Sequence (⚡Interview Question).txt

18 - Graphs

001 Graph Intro

002 Graph Adjacency Matrix

003 Graph Adjacency List

004 Graph Big O

005 Graph Add Vertex

005 exercise-gr-add-vertex.zip

005 solution-gr-add-vertex.zip

006 Graph Add Edge

006 exercise-gr-add-edge.zip

006 solution-gr-add-edge.zip

007 Graph Remove Edge

007 exercise-gr-remove-edge.zip

007 solution-gr-remove-edge.zip

008 Graph Remove Vertex

008 exercise-gr-remove-vertex.zip

008 solution-gr-remove-vertex.zip

19 - Graph Coding Exercises

Coding Exercise 61 Graph Add Vertex.txt

Coding Exercise 62 Graph Add Edge.txt

Coding Exercise 63 Graph Remove Edge.txt

Coding Exercise 64 Graph Remove Vertex.txt

20 - Recursion

001 Recursion Intro

002 Call Stack

002 callstack.zip

003 Factorial

003 factorial.zip

21 - Recursive Binary Search Trees

001 exercise-bst-r-contains.zip

001 rBST Contains

001 solution-bst-r-contains.zip

002 exercise-bst-r-insert.zip

002 rBST Insert

002 solution-bst-r-insert.zip

003 rBST Delete Intro

004 rBST Delete Code (1 of 3)

005 rBST Delete Code (2 of 3)

006 exercise-bst-min-value.zip

006 rBST Minimum Value

006 solution-bst-min-value.zip

007 exercise-bst-delete.zip

007 rBST Delete Code (3 of 3)

007 solution-bst-delete.zip

22 - rBST Coding Exercises

Coding Exercise 65 rBST Contains.txt

Coding Exercise 66 rBST Insert.txt

Coding Exercise 67 BST Minimum Value.txt

Coding Exercise 68 rBST Delete.txt

23 - Basic Sorts

001 Bubble Sort Intro

002 Bubble Sort Code

002 exercise-bubble-sort.zip

002 solution-bubble-sort.zip

003 Selection Sort Intro

004 Selection Sort Code

004 exercise-selection-sort.zip

004 solution-selection-sort.zip

005 Insertion Sort Intro

006 Insertion Sort Code

006 exercise-insertion-sort.zip

006 solution-insertion-sort.zip

007 Insertion Sort Big O

24 - Basic Sorts Coding Exercises

Coding Exercise 69 Bubble Sort.txt

Coding Exercise 70 Selection Sort.txt

Coding Exercise 71 Insertion Sort.txt

25 - Basic Sorts Interview Leetcode Exercises

Coding Exercise 72 Bubble Sort of LL (⚡Interview Question).txt

Coding Exercise 73 Selection Sort of LL (⚡Interview Question).txt

Coding Exercise 74 Insertion Sort of LL (⚡Interview Question).txt

26 - Merge Sort

001 Merge Sort Overview

002 Merge Intro

003 Merge Code

003 exercise-merge.zip

003 solution-merge.zip

004 Merge Sort Intro

005 Merge Sort Code

005 exercise-merge-sort.zip

005 solution-merge-sort.zip

006 Merge Sort Big O

27 - Merge Sort Coding Exercises

Coding Exercise 75 Merge.txt

Coding Exercise 76 Merge Sort.txt

28 - Merge Interview Leetcode Exercise

Coding Exercise 77 Merge Two Sorted LL (⚡Interview Question).txt

29 - Quick Sort

001 Quick Sort Intro

002 Pivot Intro

003 Pivot Code

003 exercise-pivot.zip

003 solution-pivot.zip

004 Quick Sort Code

004 exercise-quick-sort.zip

004 solution-quick-sort.zip

005 Quick Sort Big O

30 - Quick Sort Coding Exercises

Coding Exercise 78 Pivot.txt

Coding Exercise 79 Quick Sort.txt

31 - Tree Traversal

001 Tree Traversal Intro

002 BFS (Breadth First Search) Intro

003 BFS Code

003 exercise-bfs.zip

003 solution-bfs.zip

004 DFS (Depth First Search) PreOrder - Intro

005 DFS PreOrder - Code

005 exercise-dfs-pre-order.zip

005 solution-dfs-pre-order.zip

006 DFS PostOrder - Intro

007 DFS PostOrder - Code

007 exercise-dfs-post-order.zip

007 solution-dfs-post-order.zip

008 DFS InOrder - Intro

009 AllCode.zip

009 DFS InOrder - Code

009 exercise-dfs-in-order.zip

009 solution-dfs-in-order.zip

32 - BST Traversal Coding Exercises

Coding Exercise 80 BFS (Breadth First Search).txt

Coding Exercise 81 DFS PreOrder.txt

Coding Exercise 82 DFS PostOrder.txt

Coding Exercise 83 DFS InOrder.txt

33 - BST Traversal Interview Leetcode Exercises

Coding Exercise 84 BST Validate BST (⚡Interview Question).txt

Coding Exercise 85 BST Kth Smallest Node.txt

34 - Other Interview Leetcode Exercises

Coding Exercise 86 List Find Max Min (⚡Interview Question).txt

Coding Exercise 87 List Find Longest String (⚡Interview Question).txt

Coding Exercise 88 List Remove Duplicates (⚡Interview Question).txt

Coding Exercise 89 List Max Profit (⚡Interview Question).txt

Coding Exercise 90 List Rotate (⚡Interview Question).txt

35 - Coding Exercises

001 CODING EXERCISES HAVE MOVED!.html

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