900 LeetCode Questions Solved: Consistency is Key

LeetCode Win Today 🚀 Solved “Apply Operations to an Array” with a simple two-pass approach. ⚡ Runtime: 0 ms (Beats 100%) Approach: 🔹 Pass 1: Traverse the array If nums[j] == nums[j-1] → Double the left element → Set the right element to 0 🔹 Pass 2: Move all zeros to the end using a two-pointer technique. 💡 Key Insight: Instead of solving everything in one complex loop, split the problem into two clean steps. 📊 Complexity: • Time → O(n) • Space → O(1) (in-place) Consistent practice. Clear thinking. Better code every day. 🧠⚡ #leetcode #dsa #algorithms #datastructures #coding #programming #python #softwareengineering #computerscience #tech #codinglife #problem-solving #100daysofcode #developers #codingjourney #techcommunity 🚀

🚀 Day 14 of my programming journey LeetCode #20 (Valid Parentheses) 💡 Understand: Given a string containing brackets () [] {}, we need to check whether the input string is valid or not. 🔗 Match: I used this problem by using Stack method 🧠 Stack Concept: Stack works on LIFO 👉 Last In, First Out stack.pop() → used to remove and return a value stack.append() → add value in stack after creating stack.push() → add value in stack during creating 📝 Plan: I used the Stack Data Structure to solve this problem: Push opening brackets into the stack When a closing bracket appears: Check the top of the stack If it matches → continue If not → return False 💻 Implement: Shown in image 🖼️ 🔍 Review: I always use Python Tutor to see each step Learned how stack helps in tracking order Improved understanding of condition handling Practiced clean and readable logic 📊 Evaluate: Now we submit our code ✔️ #Python #CodingJourney #LeetCode #Programming #Developer #CodingLife #100DaysOfCode #LearnToCode #ProblemSolving #DataStructures #Stack #PythonDeveloper #SoftwareEngineering #Consistency #DailyCoding #ProgrammerLife #LearningJourney #ComputerScience #FutureDeveloper #CodingSkills #Growth #KeepLearning #leetcode20

They wanted the maximum of 5 numbers. The program printed 0. Every number was negative. max = 0 fails when all inputs are negative. Read the first number into max, then loop for the rest. One idea, two bugs avoided. I wrote a beginner guide that covers two classics in one: ✅ Maximum of N numbers — read first into max, loop N−1 times, update if larger (and why not max = 0) ✅ Decimal to binary — divide by 2, collect remainders, reverse. In code: prepend to a string. ✅ Why the "build as number" method loses leading zeros (and why string method is correct) ✅ Full programs: max of N and decimal-to-binary with n=0 handled ✅ Summary, takeaways, and next steps (min, binary→decimal) ~6 min read. Straight to the point. https://lnkd.in/gqJWam9x #Python #Programming #Coding #Beginners #LearnToCode #Maximum #DecimalToBinary #Binary #WhileLoop #Practice #Tech #SoftwareDevelopment #CodingTips

While learning Python in Mate Academy, I couldn't understand how to design application architecture. How do you actually start to develop something. I always had questions about why do you need API? Why do you need Docker? Why do you need testing? Why do you need Celery? Why do you need React? Simple answer is. You don't! First build a program, an idea of software. Make 10 functions that do something based on your idea. And then connect it to API, automatize deployment with Docker and make a cool front-end based on those 10 functions. As a bonus idea for your portfolio is to make analytics app based on any dataset with theme that you are interested in from Kaggle website. Starting a project with bloatware can make you frustrated, because you don't have fundamental functionality of your application. Hope this helps anyone starting your projects! Good luck! #SoftwareDevelopment #python #Programming #Coding #BackendDevelopment #WebDevelopment #LearnToCode #SelfTaughtDeveloper #CareerInTech #TechLearning #SoftwareArchitecture #StartSimple #DeveloperMindset #OpenToWork #PythonJobs

The loop never stopped. They forgot one line: count += 1. A while loop runs as long as the condition is True. If you never change the variable in the condition, it stays True forever. One line inside the loop fixes it. I wrote a short beginner's guide that covers: ✅ Why loops? Repeat code instead of copy-paste ✅ while syntax and flow (condition → block → repeat) ✅ Pattern 1: Repeat N times with a counter (e.g. print Hello 10 times) ✅ Pattern 2: Repeat until condition is false (e.g. digits of a number in reverse) ✅ Why you must update the variable — avoid infinite loops ✅ Summary of both patterns + key takeaways ~4 min read. Straight to the point. https://lnkd.in/g2QAD7wD #Python #Programming #Coding #Beginners #LearnToCode #WhileLoop #Loops #Tech #SoftwareDevelopment #CodingTips

#day50 problem-solving Journey LeetCode ✅ 🚀 LeetCode Practice – Difference Between Element Sum and Digit Sum Today I solved the Difference Between Element Sum and Digit Sum of an Array problem using Python. #2535 🔹 Problem Idea: Given an array of integers, we calculate: Element Sum: Sum of all numbers in the array Digit Sum: Sum of all digits of those numbers The task is to return the difference between the element sum and the digit sum. 💡 My Approach: Traverse the array and compute the element sum. Convert each number to a string to iterate through its digits. Add each digit to the digit sum. Return the difference between the two sums. 📊 Key Takeaways: ✔️ Reinforced understanding of loops and digit extraction. ✔️ Practiced breaking down numbers into individual digits. ✔️ A simple but effective exercise in problem-solving and array traversal. 👉 Consistent problem-solving helps strengthen logical thinking and coding efficiency. Looking forward to solving more challenges! 💻✨ #Python #LeetCode #CodingPractice #ProblemSolving #Programming #DataStructures 10000 Coders

There’s an interesting divide emerging in software development. Many developers are having an identity crisis as they realise how powerful the new tools have become. Personally I’m enjoying software development more than ever for one reason… speed. Going from an idea to something that actually works in minutes or hours, instead of days or weeks. It reminds me of what first attracted me to Python: shipping something quickly instead of typing boilerplate for hours. Tools like Claude aren’t replacing the joy of building. If anything, they’re bringing it back. #DevLeadership #AIinSoftwareDevelopment #DeveloperProductivity

🚀 30 𝐃𝐚𝐲𝐬 𝐨𝐟 𝐏𝐲𝐭𝐡𝐨𝐧 — 𝐃𝐚𝐲 #13 | 𝐈𝐧𝐭𝐞𝐫𝐦𝐞𝐝𝐢𝐚𝐭𝐞 & 𝐀𝐝𝐯𝐚𝐧𝐜𝐞𝐝 𝐍𝐞𝐬𝐭𝐞𝐝 𝐋𝐨𝐨𝐩𝐬 Day 13 was focused on learning intermediate and advanced concepts of nested loops. Today, I explored how loops can be placed inside other loops to create more structured and complex program flows. Understanding this concept helped me see how programs handle multi-level iterations. 📌 𝐖𝐡𝐚𝐭 𝐈 𝐂𝐨𝐯𝐞𝐫𝐞𝐝: 🔹 Intermediate nested loop structures 🔹 Advanced nested loop logic 🔹 How loops interact with each other inside different levels 🔹 Using nested loops to generate different patterns 💡 𝐊𝐞𝐲 𝐓𝐚𝐤𝐞𝐚𝐰𝐚𝐲: - Nested loops are powerful when it comes to handling multi-level iteration and pattern-based logic. - Understanding how each loop controls rows and columns is key to mastering patterns. A 𝐡𝐮𝐠𝐞 𝐬𝐡𝐨𝐮𝐭𝐨𝐮𝐭 𝐭𝐨 𝐭𝐡𝐞 𝐂𝐨𝐝𝐞 & 𝐃𝐞𝐛𝐮𝐠 𝐘𝐨𝐮𝐓𝐮𝐛𝐞 𝐜𝐡𝐚𝐧𝐧𝐞𝐥 for explaining these concepts so clearly and making even complex topics easy to understand. The structured explanations really make learning smoother. 𝐃𝐚𝐲 13 𝐜𝐨𝐦𝐩𝐥𝐞𝐭𝐞 ✅ Each concept is helping me think more logically about programming. 💻✨ #Python #30DayChallenge #Day13 #NestedLoops #PatternProgramming #PythonLearning #CodingJourney #LearnToCode #Programming #TechGrowth

Today I solved an interesting LeetCode problem and made a short explanation video for it. Problems like these really help in improving problem-solving and logical thinking which is very important for technical interviews. Sharing the solution here. If you are learning programming, try solving it yourself first before watching the solution. Consistent practice is the key to mastering Data Structures & Algorithms. YouTube Link: https://lnkd.in/gBmMqfXd #leetcode #programming #dsa #coding #learning

They asked for the sum of 5 numbers. The loop ran forever. One line was missing: count += 1. Without incrementing the counter, the condition never became false. One line. Infinite loop. I wrote a beginner practice guide that walks through both classics: ✅ Sum of N numbers — counter loop, running sum, read inside the loop ✅ Sum of positive vs negative separately — two sums, if/else inside the loop ✅ Variables you need: num_of_numbers, sum, count (and why count < N, not <= N) ✅ Full program structure and trace examples ✅ Common mistakes: forget count += 1, wrong condition, forget to init sum to 0 ✅ Clear takeaways and next steps ~6 min read. No fluff. https://lnkd.in/gkhQBbuQ #Python #Programming #Coding #Beginners #LearnToCode #SumOfNumbers #WhileLoop #Practice #Tech #SoftwareDevelopment #CodingTips