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Flow Charts 4
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Introduction to problem solving 04 minLecture1.1
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Flow Chart Components 04 minLecture1.2
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More on Flow Charts 07 minLecture1.3
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Question (Flowchart)Lecture1.4
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Programming Fundamentals - 1 9
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Writing our first program 06 minLecture2.1
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Q.1 (Programming Fundamentals – 1) 0 questionQuiz2.1
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Variables and Operators 12 minLecture2.2
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Quiz (variables and operators) 0 questionQuiz2.2
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User Input and Loops 12 minLecture2.3
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Quiz (User Inputs and Loops) 0 questionQuiz2.3
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Do-while, break, continue 08 minLecture2.4
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Conditionals and Logical Operators 12 minLecture2.5
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Quiz(Conditionals and Logical Operators) 0 questionQuiz2.4
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Programming Fundamentals - 2 10
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Data Types and How they are stored – 01 09 minLecture3.1
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Data Types and How they are stored – 02 07 minLecture3.2
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Quiz (data types) 0 questionQuiz3.1
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Increment/Decrement, bitwise and ternary operators 10 minLecture3.3
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Functions 13 minLecture3.4
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Quiz (Functions) 0 questionQuiz3.2
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Practice Questions on FunctionsLecture3.5
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Fibonacci Series and Prime Numbers 19 minLecture3.6
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Character Lower or Upper and Binary to Decimal 15 minLecture3.7
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Practice ProblemsLecture3.8
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Arrays 12
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Arrays Introduction 09 minLecture4.1
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Basic Questions on Arrays 0 questionQuiz4.1
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Array Input 08 minLecture4.2
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Questions on Array Input 0 questionQuiz4.2
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Bubble Sort 12 minLecture4.3
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Question on bubble sort 0 questionQuiz4.3
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Selection Sort 10 minLecture4.4
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Question on Selection Sort 0 questionQuiz4.4
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Insertion Sort 11 minLecture4.5
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Question on Insertion Sort 0 questionQuiz4.5
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Searching an Array 13 minLecture4.6
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Quiz – Searching an Array 0 questionQuiz4.6
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Strings and 2D arrays 5
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Strings and Character arrays 13 minLecture5.1
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2D Arrays 13 minLecture5.2
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Question on 2D Array 0 questionQuiz5.1
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Zigzag Print 06 minLecture5.3
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Problems on ArraysLecture5.4
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Pointers 11
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Pointers Introduction 14 minLecture6.1
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Quiz(Pointer Introduction) 0 questionQuiz6.1
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Pointer Arithmetic and Arrays 17 minLecture6.2
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Quiz (pointer arithmetic and arrays ) 0 questionQuiz6.2
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Characters and Pointers 06 minLecture6.3
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Question (Characters and Pointers) 0 questionQuiz6.3
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Functions and Pointers 09 minLecture6.4
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Quiz on Functions and Pointers 0 questionQuiz6.4
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Double Pointers 10 minLecture6.5
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Pass by value and Pass by reference 06 minLecture6.6
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Quiz on double pointers and passing (by value and by reference) 0 questionQuiz6.5
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Dynamic Memory Allocation 4
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Dynamic allocation Introduction 13 minLecture7.1
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Dynamic allocation – 2D arrays 11 minLecture7.2
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Local/Global, Macros, Inline functions, Default Arguments 13 minLecture7.3
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Quiz- Dynamic Memory Allocation 0 questionQuiz7.1
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Constants 6
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Constant Variables 06 minLecture8.1
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Quiz Constant Variables 0 questionQuiz8.1
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Constant Pointers 06 minLecture8.2
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Quiz Constant Pointers 0 questionQuiz8.2
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Constant Parameters 03 minLecture8.3
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Quiz Constant Parameters 0 questionQuiz8.3
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Recursion 15
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Recursion Introduction 11 minLecture9.1
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Power and fibonacci 11 minLecture9.2
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Is array sorted (using recursion) ? 09 minLecture9.3
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Has 5 and first index of 5 in array 10 minLecture9.4
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Quiz 1 – Recursion 0 questionQuiz9.1
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Binary Search using recursion 06 minLecture9.5
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Question (searching) 0 questionQuiz9.2
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Towers of Hanoi 11 minLecture9.6
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Bubble and Selection sort using recursion 13 minLecture9.7
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Merge Sort 17 minLecture9.8
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Question – Merge Sort 0 questionQuiz9.3
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Quick Sort – Part 01 10 minLecture9.9
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Quick Sort – Part 02 07 minLecture9.10
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Quiz – Quick Sort 0 questionQuiz9.4
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Problems on Arrays and RecursionLecture9.11
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Recursion Problems 6
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Staircase Problem 07 minLecture10.1
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Subsequences of a String 12 minLecture10.2
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Permutations of a string 16 minLecture10.3
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Keypad Combinations 10 minLecture10.4
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String Codes 13 minLecture10.5
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Ways to reach bottom of a matrix 13 minLecture10.6
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Time and Space Complexity 5
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Time Complexity -01 08 minLecture11.1
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Time Complexity -02 15 minLecture11.2
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Time Complexity -03 15 minLecture11.3
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Space Complexity 13 minLecture11.4
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Time & Space Complexity Quiz 0 questionQuiz11.1
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Object Oriented Programming Basics 7
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OOP Introduction 08 minLecture12.1
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Private members 06 minLecture12.2
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Quiz on classes and objects 0 questionQuiz12.1
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Constructors, Destructors, Static Members 09 minLecture12.3
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Creating a class for complex numbers 06 minLecture12.4
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Quiz on Constructors and Destructors 0 questionQuiz12.2
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Practice problems on OOPSLecture12.5
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Linked Lists 15
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Linked Lists Introduction 11 minLecture13.1
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Create our first Linked LIst 10 minLecture13.2
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Taking Linked List as input from user 10 minLecture13.3
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Linked List Quiz – 1 0 questionQuiz13.1
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Inserting an element 10 minLecture13.4
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Deleting an element and finding middle node 14 minLecture13.5
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Linked List Quiz – 2 0 questionQuiz13.2
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Reverse a Linked List 13 minLecture13.6
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Finding length of linked list 06 minLecture13.7
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Reverse K elements 08 minLecture13.8
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Problems on linked lists – Part 1Lecture13.9
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Detect and remove loop 13 minLecture13.10
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Merge two sorted linked lists 06 minLecture13.11
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Add a number to Linked List 16 minLecture13.12
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Problems on linked lists – Part 2Lecture13.13
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Stacks Queues 10
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Stacks Queues Introduction 06 minLecture14.1
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Stacks Queues Quiz – 1 0 questionQuiz14.1
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Stacks using arrays 17 minLecture14.2
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Stack using linked list 10 minLecture14.3
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Queue using linked list 09 minLecture14.4
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Stacks Queues Quiz – 2 0 questionQuiz14.2
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Stacks using two queues 09 minLecture14.5
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Special stack using two stacks 12 minLecture14.6
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Inbuilt stack and queue 07 minLecture14.7
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Problems on Stacks QueuesLecture14.8
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Stacks Queues Problems 5
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Balanced Parenthesis 09 minLecture15.1
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Bottom insert and reverse stack 09 minLecture15.2
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Insert in sorted order and Sort Stack 08 minLecture15.3
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Stock Span Problem 12 minLecture15.4
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Reverse Queue and print binary till N 09 minLecture15.5
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Trees 10
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Trees Introduction 08 minLecture16.1
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Level wise input of trees 09 minLecture16.2
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Trees Quiz – 1 0 questionQuiz16.1
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Print Level wise and using Recursion 15 minLecture16.3
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Print all nodes at depth K 07 minLecture16.4
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Height of Tree and largest node 11 minLecture16.5
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Trees Quiz – 2 0 questionQuiz16.2
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Nodes larger than given and Node & children sum greatest. 11 minLecture16.6
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Identical trees and replace with depth value 11 minLecture16.7
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Problems on TreesLecture16.8
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Binary Trees 14
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Binary trees introduction 04 minLecture17.1
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Taking input level wise 05 minLecture17.2
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Print level wise and print recursion 07 minLecture17.3
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Find node , find largest, find mirror image 13 minLecture17.4
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Quiz on binary trees – 1 0 questionQuiz17.1
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Tree traversals 14 minLecture17.5
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Quiz on binary trees – 2 0 questionQuiz17.2
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Diameter of a binary tree 10 minLecture17.6
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Width of a binary tree 05 minLecture17.7
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Is identical and is subtree ? 11 minLecture17.8
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Remove Leaf Nodes 07 minLecture17.9
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Build binary tree from inorder and preorder 12 minLecture17.10
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Quiz on binary trees – 2 0 questionQuiz17.3
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Practice problems on Binary treesLecture17.11
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Binary Search Trees 7
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BST introduction 13 minLecture18.1
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Print all nodes between K1 and K2 07 minLecture18.2
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Build BST from sorted array 06 minLecture18.3
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Binary Search Trees Quiz 0 questionQuiz18.1
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Kth smallest in BST 08 minLecture18.4
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LCA in BST and insert node on BST 11 minLecture18.5
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Practice problems on BSTsLecture18.6
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Priority Queues 7
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Priority Queues Introduction 09 minLecture19.1
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Priority Queues – 1 0 questionQuiz19.1
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Insert 16 minLecture19.2
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Delete and heap sort 16 minLecture19.3
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Priority Queues Quiz – 2 0 questionQuiz19.2
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K largest Elements 07 minLecture19.4
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Sort K-sorted Array 06 minLecture19.5
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Hashmaps 12
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Hashmaps Introduction 12 minLecture20.1
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Remove Duplicates 16 minLecture20.2
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Hashmaps quiz – 1 0 questionQuiz20.1
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Intersection of two arrays 10 minLecture20.3
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Duplicates in distance K and its subset 13 minLecture20.4
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Longest consecutive increasing sequence 13 minLecture20.5
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Iterators 06 minLecture20.6
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Hashmaps implementation-1 10 minLecture20.7
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Hashmaps implementation – 2 13 minLecture20.8
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Hashmaps implementation – 3 06 minLecture20.9
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Hashmaps implementation – 4 06 minLecture20.10
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Problems on hashmapsLecture20.11
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Tries 5
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Tries Introduction 10 minLecture21.1
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Insert a word 09 minLecture21.2
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Is word present 05 minLecture21.3
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Tries Quiz – 1 0 questionQuiz21.1
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Delete a word 12 minLecture21.4
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Graphs 12
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Graphs Introduction 13 minLecture22.1
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Graphs Quiz – 1 0 questionQuiz22.1
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Breadth First Search (BFS) 20 minLecture22.2
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Depth First Search (DFS) 08 minLecture22.3
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Have path using DFS 09 minLecture22.4
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Graphs Quiz – 2 0 questionQuiz22.2
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Get Path 13 minLecture22.5
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Is given graph connected 07 minLecture22.6
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Print Connected components 05 minLecture22.7
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Dijkstra’s Algorithm – 1 16 minLecture22.8
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Dijkstra’s Algorithm – 2 12 minLecture22.9
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Graphs Quiz – 3 0 questionQuiz22.3
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Dynamic Programming 10
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Understanding DP using fibonacci problem 16 minLecture23.1
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DP Quiz – 1 0 questionQuiz23.1
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LCS using recursion 08 minLecture23.2
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LCS using DP 12 minLecture23.3
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Edit Distance using DP 11 minLecture23.4
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Minimum steps to reach one 10 minLecture23.5
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Minimum Cost Path 10 minLecture23.6
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DP Quiz – 2 0 questionQuiz23.2
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Largest Square matrix with all ones 11 minLecture23.7
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DP Quiz – 3 0 questionQuiz23.3
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Bonus -Frequently asked Interview Problems 29
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Max contiguous subarray sum 07 minLecture24.1
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Max contiguous subarray product 18 minLecture24.2
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Triplet sum 15 minLecture24.3
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Rain water trapped 10 minLecture24.4
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Container with Max water 10 minLecture24.5
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Print Anti Diagonals 08 minLecture24.6
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Majority Element 10 minLecture24.7
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First missing positive integer 12 minLecture24.8
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Pivot element 09 minLecture24.9
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Pancake sorting 11 minLecture24.10
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Bulbs required 12 minLecture24.11
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Chess coding problem- Queen moves 14 minLecture24.12
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Minimum steps in infinite grid 06 minLecture24.13
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Smallest unsorted subarray 06 minLecture24.14
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Different Bits Sum Pairwise 09 minLecture24.15
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Find peak element 08 minLecture24.16
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Implement Power function 05 minLecture24.17
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Sorted Permutation RankLecture24.18
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Minimum Cost Path 10 minLecture24.19
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Search for a range 10 minLecture24.20
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Minimize absolute difference 06 minLecture24.21
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Dutch Flag Problem 10 minLecture24.22
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Smallest Sequence with given primes 10 minLecture24.23
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Longest Arithmetic Progression 19 minLecture24.24
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Rearrange Array 10 minLecture24.25
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Next Greater Number 06 minLecture24.26
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Chess Coding Problem 07 minLecture24.27
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Sort Array with Squares 06 minLecture24.28
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Distribute in Circle 05 minLecture24.29
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