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Course Content

1. Array

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1.1. DSA Introduction

1.2 Abstract Data Type

1.3 Binary Search Over Linear

1.4 Handling the Overflow

1.5 Binary Search First and Last Occurence

1.6 Binary Search Find element in rotated sorted array

1.7 Binary Search Rotation count in anti-clockwise rotated sorted array

1.8 Binary Search Search in an almost sorted array

1.9 LeetCode Map Sum pairs Approach I

1.10 LeetCode Map Sum pairs Approach II

1.11 LeetCode Map Sum pairs Approach III

1.12 Complexity Analysis

2. LinkList

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2.1 Array vs List

2.2 LinkList Problem Printing

2.3 LinkList Problem – Reversal

2.4 Understanding Recursion List Printing (Recusive vs Iterative)

2.5 Linklist Question Discussion Reversing from L to R

2.6 Linklist Question Coding Reversing from L to R

2.7 LeetCode Problem Linked List Cycle II and Linked List Cycle I

2.8 LeetCode Problem Odd Even Linked list

2.9 LeetCode Problem Sort linked list which is already sorted on absolute values

2.10 LeetCode Problem Swapping nodes in Linked list

2.11 What is done until now and upcoming lecture’s discussion

3. Stacks

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3.1 Stack pop(), top(), isempty() and Application

3.2 Stack Implementation using array

3.3 Stack Implementation using linked list

3.4 Stack Linked list Reversal

3.5 Stack Balanced Parenthesis

3.6 Stack Recap

3.7 Notation, Operators, Operands, Order of Operation

3.8 Infix to Postfix, Prefix (Manual)

3.9 Infix to Postfix Conversion (Algorithm)

3.10 Infix to Postfix Conversion (Code)

3.11 Postfix, Prefix Evaluation (Algorithm)

3.12 Postfix, Prefix Evaluation (Code)

3.13 Evaluating Infix (Discussion)

3.14 LeetCode Next Greater Element 1 (discussion)

3.15 LeetCode Next Greater Element 1 (algorithimic and coding part)

3.16 LeetCode Next Greater Element 2 (discussion Coding)

3.17 LeetCode Next Greater Element 3 (discussion Algorithm)

3.18 LeetCode Next Greater Element 3 (Coding)

4. Queue

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4.1 Queue Introduction

4.2 Queue Operation Implementation using arrays

4.3 Queue Operation Implementation using linked list

5. Sorting

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5.1 Sorting Algorithm

5.2 Counting Sort I

5.3 Counting Sort II

5.5 Insertion Sort

5.6 Merge Sort I

5.7 Merge Sort II

5.8 Quick Sort I

5.9 Quick Sort II

5.10 Insert Interval and Merge Interval Leetcode Questions

5.11 Rotate Image Leetcode Question

5.12 Backspace Compare Leetcode Question

5.13 mySqrt Leetcode Question

6. Binary Tree

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6.1 Tree Introduction

6.2 Tree Introduction & Applications

6.3 BinaryTree Complete Overview

6.4 BinaryTree TreeTraversal

6.5 BinaryTree Coding Preorder Traversal Recursive Approach

6.6 BinaryTree Coding Inorder Traversal Recursive Approach

6.7 BinaryTree Coding Postorder Traversal Recursive Approach

6.8 BinaryTree Coding Preorder Traversal Iterative Approach

6.9 LeetCode 132 Pattern

6.10 BinaryTree Level Order Traversal Discussion

6.11 BinaryTree Coding Level Order Traversal or BFS

6.12 BinaryTree Array Implementation

6.13 BinaryTree Discussion on Travesal using O(1) Space

Binary tree.pdf

Binary Tree Quiz

7. Binary Search Tree

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7.1 Binary Seach Tree

7.2 AVL,Red Black Trees

7.3 Binary Search Tree Deletion

7.4 Validate BST Question

7.5 In Order Successor Implementation

7.6 Height Balanced BST

7.7 Implementation of left leaning RBT

8. Trie

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8.2 Trie Representation

8.3 Trie Implementation-Insertion

8.4 Trie Implementation-Search

8.5 Binary Search Tree Deletion

8.6 Validate BST Question

8.7 In Order Successor Implementation

8.8 Height Balanced BST

8.9 Implementation of left leaning RBT

8.10 LeetCode Replace Words

8.11 LeetCode design add and search words data structure

9. Graph

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9.1 Graph Introduction

9.2 Graph Types

9.3 Graph Terminologies

9.4 Graph DFS Introduction

9.5 Graph DFS All paths between two nodes

9.6 Graph BFS Introduction

9.7 Graph Comparing DFS vs BFS on shortest path between two vertices

9.9 Graph Representations

9.10 Find if this path exist in a graph

9.11 All paths from source to target

9.12 All paths form source lead to destination

9.13 Number of the island Using DFS

9.14 Number of the island Using BFS With Implementation

9.15 Number of the island Using DFS Implementation

9.16 Rotting Oranges

9.17 Valid Sudoku

10. Dynamic Programming

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10.1 Dynamic Programing,Top down approach,Bottom up approach

10.2 When to use DP I

10.3 When to use DP II

10.4 Min Cost Climbing Stairs

10.5 Climbing Stairs

Dynamic Programming.pdf

Dynamic Programming Quiz

11. Heaps

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11.1 PriorityQueue Introduction

11.2 Heap Introduction

11.3 PriorityQueue Using in JAVA and Heapification

11.4 PriorityQueue Building Heap from Array

11.5 PriorityQueue Upcoming lectures

12. Problem Solving

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1 Microsoft questions set 1 – 1

2 Microsoft questions set 1 – 2

3 Microsoft questions set 1 – 3

4 Microsoft questions set 1 – 4

5 Microsoft questions set 2 – 1

6 Microsoft questions set 2 – 2

7 Microsoft questions set 2 – 3

8 Microsoft questions set 3 – 1

9 Microsoft questions set 3 – 2

10 Microsoft questions set 3 – 3

11 Microsoft questions set 3 – 4

12 Microsoft questions set 4 – 1

13 Microsoft questions set 4 – 2

14 Microsoft questions set 4 – 3

15 Microsoft questions set 4 – 4

16 Microsoft questions set 5 – 1

17 Microsoft questions set 5 – 2

18 Microsoft questions set 6 – 1

19 Microsoft questions set 6 – 2

20 Microsoft questions set 6 – 3

21 Microsoft questions set 6 – 4

22 Microsoft questions set 7 – 1

23 Microsoft questions set 7 – 2

24 Microsoft questions set 7 – 3

25 Microsoft questions set 7 – 4

26 Microsoft questions set 8 – 1

27 Microsoft questions set 8 – 2

28 Microsoft questions set 8 – 3

Leetcode Video Solutions

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1. Two Sum | Leetcode Easy

2. Valid Sudoku | Leetcode Medium

3. Group Anagrams | Leetcode Medium

4. Container with most Water | Leetcode Medium

5. Set Matrix Zeros | Leetcode Medium – Java, C++

5.1 Set Matrix Zeros | Leetcode Medium – PythonDraft Lesson

6. Median of two sorted arrays | Leetcode Hard

7. Trapping Rain Water | Leetcode Hard – Java, C++

7.1 Trapping Rain Water | Leetcode Hard – Python

8. Best time to buy and sell stock | Leetcode Easy

9. Best time to buy and sell stock ii | Leetcode Medium

10. Product of Array Except Self | Leetcode Medium

11. Find Minimum in Rotated Sorted array II | Leetcode Hard

12. Range Sum Query – Immutable | Leetcode Easy

13. Sort Colours | Leetcode Medium

14. Roman to Integer | Leetcode Easy

15. Candy Description | Leetcode Hard

16. Remove Duplicates from Sorted Arrays

17. Longest Substring without repeating characters | Leetcode Medium

18. Fruit into Baskets | Leetcode Medium

19. Text justification | Leetcode Hard

20. Plus One | Leetcode Easy

21. Subarray Sum Equal k | Leetcode Medium

22. Permutation in String | Leetcode Medium

23. Happy Number | Leetcode Easy

24. Reverse Linked List ii | Leetcode Medium

25. Design Linked List | Leetcode Medium

26. Palindrome Linked List | Leetcode Easy

27. Odd even Linked List | Leetcode Medium

28. Split Linked List in Parts | Leetcode Medium

29. Copy List with Random Pointer | Leetcode Medium

30. Reverse Linked List | Leetcode Easy

31. Linked List Random Node | Leetcode Medium

32. Swapping Nodes in a Linked List | Leetcode Medium

33. LRU Cache | Leetcode Medium

34. Remove Linked List Elements | Leetcode Easy

35. Flatten Nested List Iterator | Leetcode Medium

36. Remove Duplicates from Sorted List ii | Leetcode Medium

37. Convert Binary Number in a Linked List to Integer

38. Rotate List | Leetcode Medium

39. Insertion Sort List | Leetcode Medium :- Java, C++

Technical Mock Interview

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Technical Interview 1

Technical Interview 2

Technical Interview 3

Technical Interview 4

Technical Interview 5

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Data Structure & Algorithm Using Java

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