Right-Aligned Staircase Pattern in Java 8

Day 45-What I Learned In a Day (JAVA) Today I explored some important concepts related to static in Java: 🔹 Static Method Learned how static methods belong to the class and can be called without creating an object. 🔹 Static Initializer (Static Block) Understood how a static block is executed only once when the class is loaded. 🔹 Single-Line Static Initializer Explored how we can initialize static variables in a single line. 🔹 Multi-Line Static Initializer Learned how to use static blocks for complex initialization logic. Practiced 👇 #Java #Programming #LearningJourney #Coding #100DaysOfCode

100 Days of Coding Challenge – Day 35 📌 Problem: Longest Repeating Character Replacement 💻 Language: Java 🔍 Platform: LeetCode Approach Used: Sliding Window + Frequency Count 1. Use a sliding window with two pointers (left and right) 2. Maintain a frequency array for characters 3. Track the count of the most frequent character in the window 4. If (window size - max frequency) > k, shrink the window 5. Keep updating the maximum window length 👉 Key Insight: We can replace at most k characters, so window is valid if remaining characters ≤ k Time Complexity: O(n) Space Complexity: O(1) 🔗 Problem Link: https://lnkd.in/gD4WeQJU 🔗 Code Link: https://lnkd.in/gEyEXyXB #100DaysOfCode #Day34 #Java #DSA #LeetCode #ProblemSolving #CodingJourney #SlidingWindow #Strings

Reversed String in Java | Easy Logic + Coding 💡 Strong fundamentals are essential to become a confident developer. This example shows how String Reversal works using simple logic: • Start with a given string • Traverse the string from last character to first • Use loop or built-in methods • Form the reversed string Practicing these types of problems improves logical thinking and strengthens coding basics. 📊 Example Input : LIVE Output : EVIL 🎥 I’ve also created a short video explaining this concept with code: YouTube link : https://lnkd.in/eKH2JJwa #Java #Programming #ProblemSolving #Coding #SoftwareDevelopment #Learning #CSE #Developers #LogicBuilding #String

100 Days of Coding Challenge – Day 37 📌 Problem: Longest Repeating Character Replacement 💻 Language: Java 🔍 Platform: LeetCode Approach Used: Sliding Window + Frequency Count 1. Use two pointers (left, right) to maintain a window 2. Keep a frequency array to count characters in the window 3. Track the count of the most frequent character 4. If (window size - max frequency) > k, shrink the window 5. Update the maximum valid window length 👉 Key Insight: Replace at most k characters to make all characters in the window the same Time Complexity: O(n) Space Complexity: O(1) 🔗 Problem Link: https://lnkd.in/gD4WeQJU 🔗 Code Link: https://lnkd.in/g2qqRmfw #100DaysOfCode #Day37 #Java #DSA #LeetCode #ProblemSolving #CodingJourney #SlidingWindow #Strings

Did you know Java doesn't always crash when you divide by zero? 🤯 If you try to divide a regular whole number by zero, Java will immediately throw a red flag (an ArithmeticException) and crash your program. 🛑 But add a decimal, and the rules completely change! If you try to run 1.0 / 0.0, Java follows the global standard for floating-point math. Instead of crashing, your console will calmly print out: Infinity 🚀♾️ Why does this happen? Floating-point numbers in Java are specifically designed to handle extreme math scenarios without breaking the system. They have built-in safety nets for values like infinity or even "Not a Number" (NaN). Save this post to keep in your back pocket for your next coding interview! 💻✨ #Java #CodingTips #SoftwareDevelopment #ProgrammingLanguages #TechTrivia #DeveloperLife

Strings are one of the most fundamental yet powerful components in Java, and understanding how they actually work can make a significant difference in writing efficient, reliable, and scalable applications. This guide breaks down key concepts such as how Strings are stored in memory (String Constant Pool vs Heap), why immutability is a core design decision, and how different comparison methods like ==, .equals(), .equalsIgnoreCase(), and .compareTo() behave in real scenarios. These are not just theoretical ideas they directly impact performance, memory optimization, and correctness of code. It also highlights the practical side of working with Strings, including commonly used methods and when to use mutable alternatives like StringBuilder or StringBuffer for better performance in specific use cases. #Java #SoftwareDevelopment #Programming #Coding #JavaDeveloper #TechSkills #BackendDevelopment #ComputerScience #TapAcademy

🚨 Java fact about constructors 👇 Constructors don’t have a return type… But something still returns an object 🤯 Example: class User { User() { System.out.println("Constructor called"); } } User user = new User(); 👉 What’s actually happening? - "new" keyword creates the object - Allocates memory - Calls the constructor - Returns the reference 👉 Important: Constructor itself does NOT return anything 👉 "new" keyword returns the object --- 👉 This is NOT a constructor: class User { void User() { } ❌ } 👉 It becomes a normal method 💡 Many people think constructor returns object… but actually new keyword does that Did you know this? 👇 #Java #CoreJava #Programming #BackendDeveloper #Coding #TechLearning

->A simple Java concept that’s easy to overlook 👇 Immutable Strings 🔒 String str = "hello"; str.concat(" world"); System.out.println(str); // still "hello" Strings don’t change after creation. Operations like concat() create a new object instead ♻️ str=str.concat(" world"); System.out.println(str); // "hello world" Small detail ⚡ But important while writing logic 🧠 #Java #BackendDevelopment #Programming

Mini-Max Sum Problem Solved in Java 🚀 | Efficient Coding Approach Today I solved the classic Mini-Max Sum problem using Java! 💻 📌 Problem Statement: Given 5 positive integers, find the minimum and maximum values by summing exactly 4 out of the 5 numbers. 📌 Approach: Instead of sorting, I used an optimized method: Calculate total sum Subtract the maximum value → gives minimum sum Subtract the minimum value → gives maximum sum 📌 Why this approach? Time Complexity: O(n) #Java #Coding #Programming #ProblemSolving #DataStructures More efficient than sorting (O(n log n))

100 Days of Coding Challenge – Day 38 📌 Problem: Max Consecutive Ones III 💻 Language: Java 🔍 Platform: LeetCode Approach Used: Sliding Window (Two Pointers) 1. Use two pointers (left and right) to maintain a window 2. Count the number of zeros in the current window 3. Expand the window by moving right 4. If zeros exceed k, shrink the window from the left 5. Track the maximum window size (right - left + 1) Time Complexity: O(n) Space Complexity: O(1) 🔗 Problem Link: https://lnkd.in/gcryD9Np 🔗 Code Link: https://lnkd.in/g44uWAsX #100DaysOfCode #Day38 #Java #DSA #LeetCode #ProblemSolving #CodingJourney #SlidingWindow #TwoPointers