When diving into the world of mathematics and computer science, we often encounter sequences of numbers arranged in a particular order. Two terms frequently used in this context are “non-decreasing order” and “increasing order.” Although they might sound similar at first glance, they hold subtly different meanings that can significantly impact the interpretation of data, […]
Problem Statement You are given an n x n grid filled with integers and obstacles. Your goal is to find a path from the top-left corner (0,0) to the bottom-right corner (n-1,n-1) that maximizes the sum of the integers along the path. You can only move to the right or down at each step. Obstacles […]
When working with collections in Java, the ArrayList class is one of the most frequently used data structures due to its flexibility and powerful features. However, there may be instances where you need a customized version to suit specific requirements. This blog post will guide you through creating a simple, custom ArrayList implementation in Java, […]
Min and Max Heaps are specialized binary tree structures that play a crucial role in algorithms and data structure optimization, especially in the realm of priority queues and scheduling algorithms. Before diving into the specifics of Min and Max Heaps, let’s revisit some fundamental concepts. Binary Tree Basics A Binary Tree is a hierarchical data […]
Binary Heap A binary heap is a specific type of binary tree (more precisely, a complete binary tree) that satisfies the heap property: The primary purpose of a binary heap is to quickly access the highest or lowest element (depending on whether it’s a max heap or min heap). Complete Binary Tree A complete binary […]
In the world of programming, managing collections of objects efficiently is crucial for developing high-performance applications. Java, with its rich API, offers various data structures to cater to different needs. Among these, the PriorityQueue holds a special place for scenarios requiring sorted access based on priority. This blog post delves into the nuances of PriorityQueue […]
Introduction: In the world of Java programming🌐, collections play a vital role in managing and manipulating data. Among these collections, HashMaps are widely used for their efficient key-value storage and retrieval capabilities. However, when working with HashMaps (or any other collection type), developers often encounter a perplexing exception: ConcurrentModificationException 😵. This exception can occur when […]
Before going to ExecutorFramework first understand what is Asynchronous execution and Concurrent execution. Asynchronous Execution: In Java Execution Framework we can submit the task for execution without waiting for their completion. The task summited to the Execution Framework is to continue to run separate threads, without being blocked. This means your main thread doesn’t have […]
In Java concurrency, Executor and Executors play pivotal roles but serve different purposes. Understanding the distinction between these two is crucial for effectively managing concurrent tasks in Java applications. Executor This is an interface designed to abstract the execution of tasks in a thread. The Executor interface provides a single method, execute(Runnable command)which is intended […]
Spring Boot simplifies the development of Spring applications by providing a plethora of annotations that streamline the configuration and setup of applications. In this guide, we’ll dive deep into the most commonly used Spring Boot annotations, exploring their purposes and demonstrating their use with real-time examples. 1. Core Spring Framework Annotations @SpringBootApplication Purpose: Serves as […]