Cephas
St. Josephs College of Engineering
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ECE undergraduate passionate about Signal Processing, Wireless Communications (5G/6G), and Intelligent Automation. I enjoy solving problems using MATLAB and Python, especially in domains like RF systems, image processing, and AI model deployment. Currently exploring advanced topics in space communications, radar, and applied machine learning. Always curious, learning, and sharing knowledge through MATLAB Cody challenges and technical projects.
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Discussion
Problem 61065. Convert Hexavigesimal to Decimal
The challenge: You are given a string of lowercase letters 'a' to 'z'. Each character represents a base-26 digit: 'a' = 0 1....
2 months ago | 0
Discussion
Tip for Problem 61059 – Leaderboard for the Nedball World Cup:
To track the current leader after each match, you can use cumulative scores. First, calculate the cumulative sum for each player...
2 months ago | 0
Discussion
Logical Indexing Is Gold
Instead of looping with if-statements, use logical indexing: A(A < 0) = 0; One line, no loops, full clarity.
2 months ago | 0
Discussion
Use mod() for Cyclic Problems
Whenever a problem repeats in cycles (like indexing or angles), mod() keeps your logic clean: idx = mod(i-1, n) + 1; No if-els...
2 months ago | 0
Discussion
Preallocating Arrays Matters
Instead of growing arrays inside a loop, preallocate with zeros(), ones(), or nan(). It avoids memory fragmentation and speeds u...
2 months ago | 0
Discussion
Always Read the Example Output Carefully
Cody often hides subtle hints in example outputs — like data shape, rounding, or format. Matching those exactly saves you a lot ...
2 months ago | 0
Discussion
Know When to Use isequal()
isequal() is your best friend for Cody! It compares arrays perfectly without rounding errors — much safer than == for matrix out...
2 months ago | 0
Discussion
Debugging Hidden Test Cases
When Cody hides test cases, test your function with random small inputs first. If it works for many edge cases, it will almost a...
2 months ago | 0
Discussion
Vectorization Over Loops
I realized that using vectorized logic instead of nested loops makes Cody problems run much faster and cleaner. Functions like a...
2 months ago | 0
