Coding Challenges for Beginners & Intermediate

<h2>Introduction</h2>
<p>Coding challenges are essential for sharpening your problem-solving skills, preparing for technical interviews, and becoming a confident web developer.</p>

<h3>1. Why Practice Coding Challenges?</h3>
<ul>
  <li>Improves logical thinking and algorithmic understanding</li>
  <li>Prepares for technical interviews and coding assessments</li>
  <li>Strengthens proficiency in your chosen programming language</li>
  <li>Builds confidence in debugging and writing efficient code</li>
</ul>

<h3>2. Beginner Challenges</h3>
<ul>
  <li>Reverse a string</li>
  <li>Find the largest or smallest number in an array</li>
  <li>Sum all numbers in an array</li>
  <li>Check if a string is a palindrome</li>
  <li>FizzBuzz problem</li>
</ul>

<h3>3. Intermediate Challenges</h3>
<ul>
  <li>Implement a stack or queue using arrays</li>
  <li>Find duplicate elements in an array</li>
  <li>Merge two sorted arrays</li>
  <li>Create a simple calculator (expression parser)</li>
  <li>Find the longest substring without repeating characters</li>
</ul>

<h3>4. Recommended Platforms</h3>
<ul>
  <li><a href="https://leetcode.com">LeetCode</a> – beginner to advanced challenges</li>
  <li><a href="https://www.hackerrank.com">HackerRank</a> – beginner-friendly exercises</li>
  <li><a href="https://www.codewars.com">CodeWars</a> – gamified coding challenges</li>
  <li><a href="https://www.codeforces.com">Codeforces</a> – competitive programming contests</li>
  <li><a href="https://www.exercism.io">Exercism</a> – language-specific exercises</li>
</ul>

<h3>5. Tips for Solving Challenges</h3>
<ul>
  <li>Understand the problem thoroughly before coding</li>
  <li>Plan your solution and break it into smaller steps</li>
  <li>Write clean, readable, and well-commented code</li>
  <li>Test your solution with multiple inputs and edge cases</li>
  <li>Analyze time and space complexity for optimization</li>
</ul>

<h3>6. Tracking Progress</h3>
<ul>
  <li>Maintain a log of all solved problems</li>
  <li>Review mistakes and optimize previous solutions</li>
  <li>Gradually move to more complex challenges as you progress</li>
</ul>

<h3>Conclusion</h3>
<p>Consistent practice of coding challenges from beginner to intermediate level will strengthen your programming skills, prepare you for interviews, and help you become a confident developer.</p>