Author: admin
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LeetCode 101: 297 Serialize and Deserialize Binary Tree
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Here’s a detailed breakdown of the solution to the LeetCode problem "Serialize and Deserialize Binary Tree" (Problem 297), including explanations, examples, and insights. LeetCode Problem: 297. Serialize and Deserialize Binary Tree https://leetcode.com/problems/serialize-and-deserialize-binary-tree/description/ Problem Description: Design an algorithm to serialize and deserialize a binary tree. Serialization is the process of converting…
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LeetCode 101: 79 Word Search
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LeetCode Problem: 79. Word Search https://leetcode.com/problems/word-search/description/ Problem Description: Given an m x n grid of characters and a string word, return true if word exists in the grid. The word can be constructed from letters of sequentially adjacent cells, where "adjacent" cells are horizontally or vertically neighboring. The same letter…
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LeetCode 101: 105 Construct Binary Tree from Preorder and Inorder Traversal
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LeetCode Problem: 105. Construct Binary Tree from Preorder and Inorder Traversal https://leetcode.com/problems/construct-binary-tree-from-preorder-and-inorder-traversal/description/ Problem Description: Given the preorder and inorder traversal arrays, construct the corresponding binary tree and return its root node. Example 1: Input: preorder = [3, 9, 20, 15, 7] inorder = [9, 3, 15, 20, 7] Output: 3…
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LeetCode 101: 102. Binary Tree Level Order Traversal
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LeetCode Problem: 102. Binary Tree Level Order Traversal https://leetcode.com/problems/binary-tree-level-order-traversal/description/ Problem Description: Given the root of a binary tree, return the level order traversal of its nodes’ values. (i.e., from left to right, level by level). Example 1: Input: root = [3, 9, 20, null, null, 15, 7] Output: [[3], [9,…
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LeetCode 101: 98 Validate Binary Search Tree
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LeetCode Problem: 98. Validate Binary Search Tree https://leetcode.com/problems/validate-binary-search-tree/description/ Problem Description: Given the root of a binary tree, determine if it is a valid binary search tree (BST). A valid BST is defined as follows: The left subtree of a node contains only nodes with keys less than the node’s key.…
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Artificial Intelligence 101: Data Engineering Lifecycle
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Understanding the Data Engineering Lifecycle: Key Components and Best Practices In today’s data-driven world, the role of data engineering has become pivotal for organizations aiming to leverage data effectively. The Data Engineering Lifecycle encompasses various stages, each critical for transforming raw data into valuable insights. This blog delves into the…
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Python 101: Flask vs FastAPI
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Flask vs FastAPI: A Detailed Comparison Flask and FastAPI are two popular web frameworks used for building APIs and web applications in Python. Although they share similar purposes, they have distinct differences in terms of speed, usability, and functionality. Below, we’ll explore these differences using a structured comparison format. 1.…
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Angular 101: Two-Way Data Binding
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What is Two-Way Data Binding in Angular? Two-way data binding in Angular is a mechanism that allows you to synchronize data between the view (HTML template) and the component (TypeScript class). This means any changes made in the view are immediately reflected in the component’s data model, and vice versa.…
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Angular 101: Why Does Angular 18 Not Have app.module.ts?
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In Angular 18, the framework introduced significant changes to its module system to simplify and modernize the development experience. One of these changes is the removal of the app.module.ts file, which traditionally served as the root module configuration for the Angular application. 1. What Changed in Angular 18? Angular 18…