DataWrangling-and-Logic

A structured repository containing my hands-on practice with SQL, Pandas, and math-based logical problems. This repo focuses on core data manipulation and reasoning tasks that are essential for data analysts, data scientists, and anyone preparing for interviews.

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📌 Contents

• 📊 SQL_50: Practice problems from platforms like LeetCode focusing on joins, subqueries, window functions, etc.
• 🐼 Pandas:
  • 30 Days of Pandas (learning series)
  • Method chaining, aggregation, filtering
  • Real-world cleaning examples
• 🧠 Maths:
  • Logic-based numerical problems
  • Interview-style brain teasers

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🎯 Purpose

• Strengthen data manipulation skills
• Improve logic and analytical thinking
• Build a portfolio for data roles
• Prepare for SQL/Pandas interview rounds

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📈 Skills Covered

• Relational database queries (PostgreSQL/MySQL)
• Data analysis with Pandas
• Logical reasoning with mathematical applications
• Efficient and readable code using method chaining

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🛠 Tech Stack

• Python (Pandas, NumPy)
• SQL (via LeetCode, Jupyter SQL extensions)
• Jupyter Notebooks / Google Colab

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🚀 How to Use

1. Clone the repo:

   git clone https://github.com/DevGupta0112/DataWrangling-and-Logic.git
   cd DataWrangling-and-Logic