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Assembly Line Scheduling (Visualization and Code Examples)
Learn how to solve the assembly line scheduling problem using dynamic programming. Compare brute force vs. optimized approaches with Python, C++, and Java code examples


Gold Mine Problem (Visualization and Code Examples)
Learn to solve the Gold Mine Problem using brute force and dynamic programming. Includes code examples in Python, C++, and Java with step-by-step explanations.


Friends Pairing Problem (Visualization and Code Examples)
Learn how to solve the Friends Pairing Problem using dynamic programming with optimized code examples in Python, Java, and C++. From recursion to O(n) efficiency.


Subset Sum Problem (Visualization and Code Examples)
Learn how to solve the Subset Sum Problem using brute force and dynamic programming approaches, with complete code examples in Python, Java, and C++.


Edit Distance (With Visualization and Codes)
Learn the edit distance algorithm with Python, Java, and C++ implementations. Understand how to optimize from brute force to dynamic programming solutions.


Program for nth Catalan Number (Visualizations and Codes)
Learn multiple approaches to calculate Catalan numbers with Python, C++, and Java code examples. Compare recursive vs. dynamic programming solutions.


Permutation Coefficient (With Visualization and Codes)
Learn how to calculate permutation coefficients efficiently with optimized algorithms in Python, C++, and Java, including code examples and step-by-step explanations.


Binomial Coefficient (With Visualization and Codes)
Learn how to solve the binomial coefficient problem with optimized algorithms. Includes Python, Java, and C++ code examples with time complexity analysis.


Knapsack Problem (With Visualization and Codes)
Learn how to solve the 0/1 Knapsack Problem using brute force and dynamic programming approaches, with implementation examples in Python, C++, and Java.


Coin Change (With Visualization and Codes)
Learn how to solve the Coin Change Problem using brute force and dynamic programming approaches with Python, C++, and Java code examples.


Minimum Sum of Two Numbers Formed From Digits of An Array (Visualization)
Learn how to solve the Minimum Sum problem with optimized greedy algorithms and code examples in Python, Java, and C++. Improve your array manipulation skills.


Convert BST to Min Heap (With Visualization and Codes)
Learn how to efficiently convert a Binary Search Tree to a Min Heap with optimized algorithms, step-by-step explanations, and code examples in Python, Java and C++.


Connect n Ropes with Minimum Cost (With Visualization and Codes)
Learn how to solve the classic 'Connect n Ropes with Minimum Cost' problem using priority queues and greedy algorithms. Includes Python, Java, and C++ code examples.


Find K Largest Elements in Array (With Visualization)
Learn how to find K largest elements in an array using brute force and optimized heap approaches with Python, C++, and Java code examples and visualization.


How to Check if a Binary Tree is Heap (With Code Examples)
Learn how to verify binary tree heap properties with Python, Java, and C++ code examples. Explore both brute force and optimized approaches with time complexity analysis.


Find Median from Data Stream (With Visualization)
Learn how to efficiently find the median in a continuous stream of integers using heap data structures, with implementations in Python, Java, and C++.


String Reorganization (With Codes and Visualization)
Learn brute force and optimized approaches to rearrange strings so no identical characters are adjacent. Includes Python, C++, and Java code examples.


Merge Two Binary Max Heaps (With Visualization)
Learn how to efficiently merge two binary max heaps with Python, C++, and Java implementations. Includes both brute force and optimized approaches with code examples.


Merge K Sorted Arrays (With Visualization and Codings)
Learn two approaches to merge K sorted arrays with detailed code examples in Python, C++, and Java. Understand the efficient min-heap solution over brute force.


Maximum Subarray Sum (With Visualization)
Learn how to find the maximum element in each subarray of size k using both brute force and optimized sliding window approaches with code examples in Python, C++, and Java.


Heap Sort Algorithm (With Codes and Visualization)
Learn how to implement Heap Sort with optimized code examples in Python, Java, and C++. Understand the algorithm, time complexity, and step-by-step sorting process.


Flatten BST to sorted list (with Visualization)
Learn how to convert a Binary Search Tree to a sorted doubly linked list with optimized in-place algorithms and code examples in Python, Java, and C++.


Find the Largest BST in a Binary Tree (With Visualization)
Learn how to efficiently find the largest Binary Search Tree within a binary tree with examples in Python, Java, and C++. Optimize from O(n²) to O(n) time complexity.


Check whether BST contains Dead End or not (Visualization)
Learn how to check if a BST contains dead ends with optimized code examples in Python, Java, and C++. Includes both brute force and range-based approaches.


Check if an array can be Preorder of a BST (Visualization)
Learn how to determine if a sequence represents a valid binary search tree preorder traversal with optimized algorithms and code examples in Python, C++, and Java.


Given n appointments: find all conflicting appointments
Learn efficient algorithms to detect appointment conflicts with Python, C++, and Java code examples. Optimize from O(n²) to O(n log n) complexity using sweep line techniques.


Dijkstra's Algorithm: Find Shortest Paths with Code Examples
Master Dijkstra's algorithm with Python, C++, and Java implementations. Learn how to optimize path-finding from O(V²) to O((V+E)logV) with priority queues.


Count BST nodes that lie in a given range (Visualization)
Learn how to efficiently count Binary Search Tree nodes within a range with optimized traversal techniques. Includes Python, Java, and C++ implementations.


Smallest greater elements in whole array (Visualization)
Learn how to replace array elements with their least greater element on the right using both brute force and optimized O(n log n) approaches with Python, C++, and Java code examples.

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Find the median of BST in O(N) time and O(1) space
Discover how to find the median of a Binary Search Tree in O(n) time and O(1) space with Morris Traversal. Includes optimized code examples in Python, C++, and Java.


Count pairs from two BSTs whose sum is equal to a given value x
Learn how to count node pairs from two Binary Search Trees that sum to a target value. Includes Python, Java, C++ code and visualization with optimized two-pointer technique.


Find Kth Smallest Element in BST (Visualization)
Learn two approaches to find the Kth smallest element in a Binary Search Tree with optimized code examples in Python, Java, and C++. Time complexity analysis included.


Balance a Binary Search Tree (Visualization)
Learn how to transform an unbalanced Binary Search Tree into a balanced one with detailed code examples in Python, C++, and Java, plus time and space complexity analysi


Find Kth largest element in BST (With Visualization)
Learn optimal approaches to find the Kth largest element in a Binary Search Tree with code examples in Python, C++, and Java. Includes both brute force and optimized methods.


Merge Two BSTs (With Visualization and Coding)
Learn how to merge two Binary Search Trees with brute force and optimized approaches. Includes Python, C++, and Java code examples and step-by-step explanations.


Binary Tree to Binary Search Tree Conversion (Visualization)
Learn how to convert a binary tree to a binary search tree while maintaining structure. Step-by-step explanation with Python, Java, and C++ code examples.


Minimum Swaps To Convert Binary Tree Into BST (Visualization)
Learn how to find the minimum swaps required to transform a binary tree into a BST with Python, Java, and C++ code examples and detailed explanations.


Boundary traversal of a binary tree (Codes with Visualization)
Learn how to implement boundary traversal of a binary tree with optimal algorithms in Python, Java, and C++. Includes code examples and visualization.


Count Derangements Algorithm: Complete Guide with Code
Learn to solve the derangement problem with brute force and optimized approaches. Includes Python, C++, and Java implementations with recurrence relation explanations.


Lowest Common Ancestor of a Binary Search Tree (Visualization)
Learn how to find the Lowest Common Ancestor in a Binary Search Tree with optimized O(log n) solutions in Python, Java, and C++ with clear examples and explanations.


Inorder Successor in Binary Search Tree (Visualization)
Learn how to populate inorder successors in binary trees with optimized algorithms. Includes Python, Java, and C++ code examples with time and space complexity analysis.


Check if a Binary Tree is BST or not (Visualization)
Learn two efficient algorithms to verify if a binary tree is a valid BST with code examples in Python, Java, and C++. Includes optimized solution.


Find Min & Max Values in a BST (Visualization)
Learn two approaches to find minimum and maximum values in a Binary Search Tree (BST) with Python, C++, and Java code examples and visual explanations.


Find Duplicate Subtrees in Binary Trees (Visualization)
Learn how to identify duplicate subtrees in binary trees using brute force and optimized serialization approaches with Python, C++, and Java code examples.


Lowest Common Ancestor in a Binary Tree (Visualization)
Learn how to find the Lowest Common Ancestor (LCA) in a binary tree with optimized and brute force approaches in Python, C++, and Java - with visual examples.


Find Inorder Predecessor and Successor in BST (Visualization)
Learn efficient algorithms to find inorder successor and predecessor in Binary Search Trees with Python, Java, and C++ implementations and detailed visualizations.


Find Kth Ancestor in Binary Tree (Code with Visualization)
Learn how to find the Kth ancestor of a node in a binary tree with both brute force and optimized approaches. Includes Python, Java, and C++ code examples.


Find distance between two nodes of a Binary Tree (Visualization)
Learn how to find the distance between two nodes in a binary tree with brute force and optimized approaches, complete with Python, Java, and C++ code examples.


Binary Tree Maximum Path Sum (Visualization)
Learn how to find the maximum sum of non-adjacent nodes in a binary tree using brute force and dynamic programming approaches with Python, C++, and Java code examples.


Check if Two Trees are Mirror Images (With Visualization)
Learn how to determine if two binary trees are mirror images of each other with optimized recursive solutions and sample code in Python, Java, and C++.


Min Cost Path Algorithm: Dynamic Programming Solution
Explore the Min Cost Path problem with optimized dynamic programming solutions in Python, C++, and Java. Learn how to efficiently find the cheapest path in a grid.


Find All Duplicate Subtrees (with Visualization)
Learn how to detect duplicate subtrees in binary trees using brute force and optimized serialization techniques with Python, C++, and Java code examples.


Check if Tree Leaf Nodes Are at Same Level | Binary Tree
Learn efficient algorithms to verify if all leaf nodes in a binary tree are at the same level, with Python, C++, and Java code examples and optimized solutions.


Construct binary tree from inorder and preorder traversal
Learn how to reconstruct binary trees from inorder and preorder traversals with optimized algorithms, complete with Python, Java, and C++ code examples.


Convert binary tree into sum tree (with Visualization)
Learn step-by-step how to convert a binary tree to a sum tree with optimized O(n) solution. Includes Python, Java, and C++ code examples and visual explanations.


Convert binary tree into doubly linked list (Visualization)
Learn two approaches to convert a binary tree to a doubly linked list with Python, C++, and Java code examples. Optimized solution with O(1) space complexity.


Construct binary tree from string with bracket representation
Learn how to construct binary trees from strings with bracket notation. Includes optimized recursive and iterative approaches with code examples in Python, Java, and C++.


Diagonal Traversal of Binary Tree (Codes with Visualization)
Learn how to perform diagonal traversal of binary trees with optimized algorithms and code examples in Python, C++, and Java - with clear explanations and visuals.


Check if a Binary Tree is Balanced (Codes with Visualization)
Learn how to efficiently check if a binary tree is balanced using both brute force and optimized approaches, with code examples in Python, C++, and Java.


Zig-zag Binary Tree Traversal (Codes with Visualization)
Learn efficient algorithms for zig-zag binary tree traversal with complete code examples in Python, Java, and C++. Includes optimized approaches using deques.


Top View of a Binary Tree (Code Examples & Visualization)
Learn how to find the top view of a binary tree with step-by-step explanations, visual examples, and optimized code implementations in Python, Java, and C++.


Sort a k-sorted Doubly Linked List (with Visualization)
Learn how to efficiently sort a k-sorted doubly linked list with Python, C++, Java code examples and Visualization. Optimize from O(n log n) to O(n log k) complexity.


Split a Circular Linked List into two halves (With Visualization)
Learn how to split a circular linked list into two equal halves with both brute force and optimized approaches. Includes Python, C++, and Java code examples.


Count Triplets in Sorted Doubly Linked List: O(n²) Solution
Learn how to efficiently count triplets with a given sum in a sorted doubly linked list using brute force and optimized two-pointer approaches with code examples.


Find Pairs With a Given Sum in a Doubly Linked List
Learn how to find pairs with a target sum in a doubly linked list using brute force and optimized two-pointer approaches with code examples in Python, C++, Java and visualization


Check if a Linked List is a circular Linked List (with Visualization)
Learn how to detect cycles in linked lists using brute force and Floyd's algorithm, with code examples in Python, C++, Java and visualization for efficient cycle detection.


Find Middle of the Linked List ( With Visualization and Code)
Learn two approaches to find the middle element of a linked list with code examples in Python, C++, and Java. Optimize with the fast two-pointer technique.


Quicksort for Linked Lists (With Visualization and Codes)
Learn how to implement quicksort for linked lists with optimized and brute force approaches. Includes Python, Java, and C++ code examples with time complexity analysis.


Remove Duplicates in Sorted Linked Lists (With Visualization)
Learn how to efficiently remove duplicate nodes from sorted linked lists with O(n) time complexity. Includes Python, Java, and C++ code examples.


Detect Linked List Cycle Start Node (Floyd's Algorithm)
Learn how to find the exact starting point of a cycle in a linked list using both hash set and Floyd's Tortoise and Hare algorithm with Python, C++, Java code examples and Visualization


BST from Preorder Traversal: Optimized Algorithm & Code
Learn how to efficiently rebuild a Binary Search Tree from preorder traversal with optimized O(n) solutions in Python, Java, and C++, complete with code examples.


Tree Isomorphism Problem: Efficient Structure Comparison
Learn how to determine if two trees have identical structures through the tree isomorphism problem, with Python, C++, and Java code examples and optimized solutions.


BST Node Deletion: Algorithm & Implementation Guide
Learn how to delete nodes from Binary Search Trees with step-by-step solutions covering all three cases, complete with Python, Java, and C++ code examples.


Rotate a Doubly Linked List in Groups | Code Examples
Learn how to rotate a doubly linked list in groups with optimised and brute force approaches. Complete with Python, Java, and C++ code examples with visualization


First non-repeating character in a stream: Codes with Visualization
Learn how to efficiently find the first non-repeating character in a character stream with optimized queue-based solution and code examples in Python, Java, and C++.


Left View of a Binary Tree: Code with Visualization
Learn how to solve the Left View of a Tree problem using BFS and DFS algorithms with Python, C++, and Java code examples and step-by-step explanations.


Diameter of a Binary Tree ( With Codes and Visualization)
Learn how to calculate the diameter of a binary tree with both brute force and optimized approaches. Complete with Python, C++, Java code examples and Visualization.


Reverse Level Order Traversal: Code Examples with Visualization
Learn how to implement reverse level order traversal for binary trees with optimized code examples in Python, Java, and C++. Includes time and space complexity analysis.


Binary Tree Level Order Traversal (With Code and Visualization)
Learn how to implement level order traversal in binary trees with code examples in Python, Java, C++ and visualization. Covers both recursive and queue-based approaches.


Find the nth Node from End of a Linked List (With Codes)
Learn two efficient algorithms to find the nth node from the end of a linked list, with code examples in Python, Java, and C++. Perfect for coding interviews.


Segregate Even and Odd Nodes in a Linked List (Code Example)
Learn how to segregate even and odd nodes in a linked list with both brute force and optimized approaches. Includes Python, Java, C++ code examples and visualization.


Intersection of Two Sorted Linked Lists (with Visualization)
Learn how to find the intersection of two sorted linked lists with both brute force and optimized approaches, complete with Python, C++, and Java examples.


Add 1 to a Linked List Number (With Codes and Visualization)
Learn how to add 1 to a number represented as a linked list with Python, Java, and C++ code examples with visualization, optimized solutions, and step-by-step explanations.


Move Last Element to Front in Linked Lists (With Codes)
Learn how to efficiently move the last element to the front of a linked list with code examples in Python, C++, Java and Visualization. Perfect for programming interviews.


Delete Nodes with Greater Values on Right Side (with Code)
Learn how to delete linked list nodes with greater values on their right side using both brute force and optimized approaches, with code examples in Python, C++, Java and Visualization


Multiply Linked List Numbers (with Code and Visualization)
Learn how to multiply large numbers represented as linked lists with brute force and optimised approaches, complete with Python, C++, Java code examples and visualization


Merge K Sorted Linked Lists (Code Examples and Visualization)
Learn how to solve the 'Merge K Sorted Linked Lists' problem with brute force and optimised approaches. Includes Python, Java, C++ code examples and visualisation


Detect a Cycle in a Linked List (With Codes and Visualization)
Learn Floyd's Cycle Detection Algorithm and other methods to detect cycles in linked lists, with Python, Java and C++ code examples and practical applications.


Circular Linked List: With Coding Examples and Visualization
Learn to implement circular linked lists with code examples in Python, C++, and Java. Complete guide to insertion, deletion, and searching operations.


Binary Tree Right View (Code Examples with Visualization)
Learn how to find the right view of a binary tree using both BFS and DFS approaches, with complete code examples in Python, C++, and Java.


Preorder Traversal of Binary Tree (Code Examples)
Learn how to implement preorder traversal of binary trees using both recursive and iterative approaches with Python, C++, Java code examples and visualization.


Binary Tree Mirror: Recursive Solutions with Code Examples
Learn how to mirror a binary tree with step-by-step explanations and code samples in Python, Java, and C++. Compare brute force and optimized approaches.


Doubly Linked List Guide: With Codes Example and Visualization
Master doubly linked lists with complete Python, C++, and Java implementations. Learn efficient insertion, deletion, and searching operations with practical examples.


Singly Linked List: With Code Examples and Visualization
Master singly linked lists with complete code examples in Python, C++, and Java. Learn insertion, deletion, and searching operations with practical applications.


Linked Lists: With Code Examples and Visualization
Master linked lists with examples and visualization. Learn the advantages, operations, and when to use this fundamental data structure for efficient memory usage.


Remove Duplicates from an Unsorted Linked List: With Visualization
Learn two approaches to remove duplicates from unsorted linked lists with complete Python, C++, and Java implementations. Includes complexity analysis and visualization


Detect a Loop in a Linked List: Codes with Visualization
Learn how to detect cycles in linked lists using both brute force and optimized Floyd's Tortoise and Hare algorithm with Python, C++, and Java code examples.


Reverse a Linked List: With Code Examples and Animation
Learn how to reverse a linked list using iterative and recursive methods with code examples in Python, C++, and Java. Perfect for interview preparation.


Height of a Binary Tree ( Code Examples with Visualization )
Learn how to find the height of a binary tree with recursive and iterative approaches. Includes Python, Java, and C++ code examples with detailed explanations.

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