Solved Valid Parentheses with Stack in Java

Day 47 of #100DaysOfLeetCode Today's problem: Reverse Words in a String Language used: Java What I did today: I implemented a solution to reverse the order of words in a given string while handling extra spaces efficiently. Used split("\\s+") to handle multiple spaces. Reconstructed the reversed string using StringBuilder. Applied trim() to clean up leading and trailing spaces. Key Takeaways: split("\\s+") is great for ignoring multiple spaces. Always use trim() to ensure a neat final output. StringBuilder makes string manipulation much faster than direct concatenation. #100DaysOfCode #LeetCode #Java #CodingChallenge #ProblemSolving #Programming #DeveloperJourney #LearnToCode

🚀 Day 140 of #150DaysOfCode on LeetCode Solved: 1526. Minimum Number of Increments on Subarrays to Form a Target Array Language: Java The task was to determine the minimum number of subarray increment operations needed to build the target array from all zeros. 🔹 Intuition: Every time the current element is greater than the previous one, it means we need that many new operations to reach the next level. Decreases don’t add extra work since earlier increments already cover them. 🔹 Approach: Start with the first element’s value as the initial count. For each subsequent element, if it’s larger than the previous one, add the difference. The sum of all such differences gives the minimum number of operations required. 🔹 Complexity: Time: O(n) Space: O(1) #LeetCode #150DaysOfCode #Java #CodingChallenge #ProblemSolving #Greedy #Arrays #DSA #TechLearning #Programmer #WomenInTech #CodeJourney #DynamicProgramming

📝 COMMENTS IN THE MIDDLE? TIME TO REFACTOR. If you need a comment to explain a chunk of logic inside a method, that logic probably deserves its own name. 👉 “Mid-method comments are a smell—extract a clearly named private method.” Name the intent, not the mechanics. Small, well-named methods read like a story and make bugs easier to spot. ✅ #CleanCode #Refactoring #Readability #SoftwareCraftsmanship #CodeQuality #DeveloperTips #Programming #Java

Today task....userlogin ~ using encapsulation with abstraction class and methods. ~ also using inheritance to access the variables. ~ encapsulation is protect the data from user, this using the keyword like private that can't be accessed outside class ,so use set and get method for access and update the variables . #encapsulation #javaprogram #java #programmer #codding

Day 4 of my #100DaysOfDSA Challenge 💻 Today I solved a classic problem — Reverse of a String in Java. It’s one of the most basic yet fundamental questions that helps you understand how strings work in Java (immutable vs mutable). Here are 3 simple approaches I learned today 👇 🔹 Using loop (beginner-friendly) 🔹 Using StringBuilder (efficient way) 🔹 Using recursion (interview-level concept) Small steps every day → Big results soon 🚀 #Java #DSA #CodingChallenge #100DaysOfCode #Programming #DeveloperJourney #Learning

Ever debugged for hours only to realize you were comparing Strings with == instead of .equals()?  You're not alone. 🤦♂️ The culprit? Java's String Pool - a memory optimization that trips up even experienced developers. I just wrote a deep dive into: ✅ How String Pool actually works behind the scenes ✅ Why comparing the same content with == sometimes returns true, sometimes false ✅ The intern() method and when to use it ✅ Real performance benchmarks ✅ Common pitfalls that waste memory Practical code examples included. 5-minute read. Read here: https://lnkd.in/g4emECJM #Java #Coding #Programming #SoftwareDevelopment #SoftwareEngineering

Day 23 of #50DaysOfCode – Java 💻 Today’s challenge was to check whether a number is a Perfect Number. A Perfect Number is a number that is equal to the sum of all its positive divisors (excluding itself). Example: 6 → 1 + 2 + 3 = 6 28 → 1 + 2 + 4 + 7 + 14 = 28 This problem helped me strengthen my understanding of loops, conditions, and mathematical logic 🔍✨ #Java #CodingChallenge #50DaysOfCode #LearnToCode #ProgrammingBasics #LogicBuilding #CodeDaily #ProblemSolving

Day 21 of #50DaysOfCode – Java Today’s challenge was Printing All Prime Numbers Between 1 and N. This task helped me understand how to identify prime numbers and how nested loops work in Java. Key learnings from today: 🔹 A prime number is divisible only by 1 and itself 🔹 We can check primality by testing divisibility 🔹 Using logical conditions and loops together improves problem-solving Slowly building confidence with new concepts every day! 💪✨ #Java #CodingJourney #50DaysOfCode #PrimeNumbers #LogicBuilding #ProgrammingBasics #LearningEveryday

Hierarchical Inheritance in Java In Hierarchical Inheritance, multiple child classes inherit from a single parent class. Here, class A represents a base class, and classes B and C extend it — each providing their own implementation of the car() method with different colors. This example demonstrates how inheritance promotes code reusability and method overriding in object-oriented programming. #Java #OOPs #Inheritance #Learning #10000Coders #Coding #SoftwareDevelopment

Recently, I got curi🤔us about how high-level languages like Go, Java, or Rust are actually built. Do they all start from assembly? Turns out, not all high-level languages start from assembly. Take Go (Golang) as an example, the first Go compiler that turned Go code into machine code was written in C, not assembly. As Go matured, this C-based compiler was replaced by a new compiler written in Go itself. This fascinating process is called bootstrapping, it’s when a programming language’s compiler is written in the same language it compiles. In other words, the language learns to build itself. #golang #rustlang #bootstrapping #compiler #java #SoftwareDevelopment #Programming #GoDeveloper #SoftwareEngineering