Muhammad Shaheer’s Post

Day 33/100 – #100DaysOfCode 🚀 Solved LeetCode #1480 – Running Sum of 1d Array (Python). Today I practiced prefix sum logic to compute the running sum of an array. Approach: 1) Initialize an empty list to store the running sum. 2) Maintain a variable sum = 0. 3) Traverse the array and keep adding each element to sum. 4) Append the updated sum to the result list. 5) Return the final running sum array. Time Complexity: O(n) Space Complexity: O(n) Understanding prefix sums helps solve many array problems efficiently 💪 #LeetCode #Python #DSA #Arrays #PrefixSum #ProblemSolving #100DaysOfCode

Day 13 of my #100DaysOfCode challenge Today I explored *higher-order functions* in Python — specifically 'map()' and 'filter()'. Here’s what I learned: - How map() applies a function to every element in a list - Using lambda functions for quick, inline operations - Converting map objects into lists to view results - How filter() helps extract elements based on conditions (like finding odd numbers) It’s amazing how these built-in functions make code more concise and powerful Small steps every day, but they’re adding up! #Python #CodingJourney #LearnToCode #100DaysOfCode #Programming #DeveloperLife #SkillShikshya

🚀 Day 2 — Python Journey Continuing with Python, today I focused on integer operations. 📌 What I learned: - Integer declaration - Addition, subtraction, multiplication - Division and modulus (remainder) - Power operation - Operator precedence (which operation runs first) 💡 What stood out: Understanding operator precedence is really important — the same expression can give different results if you don’t know the order of execution. Also, modulus (%) is more useful than it looks (especially for problems and logic building). Trying to stay consistent and build strong basics step by step. #Day2 #Python #CodingJourney #Consistency #LearnInPublic

🚀 Today I practiced Python by building a mini project Created a Number Guessing Game 🎯 What I worked on: • Variables & data types • Loops (while) • Conditional statements (if/elif/else) • Attempt tracking logic What I learned: Building something small helped me understand how logic and flow actually work, instead of just watching tutorials. Challenges I faced: • Managing loop conditions • Tracking attempts correctly Sharing a snippet of my code below 👇 Next: → Building a CLI To-Do List → Improving input validation Staying consistent and learning step by step. #Python #LearningInPublic #CodingJourney #BeginnerDeveloper

Day 8/365: Reversing a List Without Using Built‑in Functions 🔁🧠 Today I revisited a very common operation in programming: reversing a list. But instead of using Python’s built‑in methods like reverse() or slicing (n[::-1]), I implemented the logic manually using two pointers and a while loop. Why this exercise matters: 1. It forces me to think about how data is stored and changed in memory. 2. I practiced the two‑pointer technique, which is used a lot in array and string problems. 3. It reminded me that behind every “simple” built‑in method, there is an actual algorithm. Day 8 done ✅ 357 more to go. If you have similar two‑pointer problems (like checking palindromes or partitioning arrays), send them my way — I’d love to try them next. #100DaysOfCode #365DaysOfCode #Python #LogicBuilding #TwoPointers #ListManipulation #CodingJourney #LearnInPublic #AspiringDeveloper

Managing Python environments shouldn’t be a nightmare. But for many — it still is. Here’s how to keep things clean, fast, and production-ready in 2026: 🛠️ Use uv or poetry to manage environments & dependencies. Faster, safer, and simpler than old-school pip+venv. ⚡ Speed matters – use polars, numpy, and numba to vectorize heavy loops. Even small tweaks can give 10× performance wins. 🧼 Lint + Format + Type-check = non-negotiable Ruff for linting Black for formatting Pyright or Pyrefly for fast type-checks 💡 Bonus tip: Use Typer to build CLIs in minutes. So clean, it feels like magic. 💬 What’s one Python setup rule you wish you knew earlier? #Python #CodeQuality #Productivity #DevTools #DataEngineering

Python Dunder Methods: Making code more "Pythonic" 🐍 I’ve been playing around with operator overloading today! Instead of writing a bulky function like add_packages(pkg1, pkg2), Python allows us to use the __add__ magic method. By defining __add__, I can simply use the + operator to combine two package objects. Cleaner syntax? Check. More readable? Absolutely. I also added __str__ to ensure that when I print the result, I get a clear, formatted summary of the dimensions and weight rather than a messy memory address. #Python #CodingTips #SoftwareDevelopment #ObjectOrientedProgramming #CleanCode

Day 1 of my LeetCode journey 🚀 🧩 Problem: Minimum Distance to the Target Element (1848) 💡 Approach: Looped through the array and tracked the minimum absolute difference whenever the target appeared. 📚 What I learned today: • How to iterate through a list efficiently • Using abs() to compute absolute difference • Tracking minimum values during iteration • Initializing variables correctly using infinity • Better understanding of loops and conditional checks in Python 🛠 Language Concepts Used: • for-loop • if condition • abs() function • min() logic / running minimum ⏱ Time Complexity: O(n) 📦 Space Complexity: O(1) 🔗 GitHub: https://lnkd.in/gZ23dWkV #LeetCode #Python #DSA #100DaysOfCode #LearningInPublic

Here's a Python dictionary merge challenge from @dontmisstmr — can you get it right without running the code? dict1 = {"name": "Alice", "age": 25} dict2 = {"city": "Noida", "age": 26} merged = dict1 | dict2 print(merged) The | operator was introduced in Python 3.9. When both dicts share a key, which value wins? Drop your answer in the comments! #Python #SoftwareDevelopment #CodingChallenge #ProgrammingTips #TechCommunity

🐍 One thing I learned from working with real systems: Most issues are not in writing code... they are in understanding failures. When something breaks, I now focus on: → Logs analysis → Reproducing the issue → Identifying root cause Instead of jumping to fix, I try to understand why it failed. This approach has improved my problem-solving a lot. #Python #Debugging #ProductionSupport #Learning