Lecture 16 - GCD Of Two Numbers | DSA Basics For Beginners | Placement Course

Welcome to Lecture 16 - GCD Of Two Numbers of our DSA Placement Course. In this lecture, we will get an understanding of GCD Of Two Numbers and how to implement them in coding.

What is the GCD in data structure?
- The GCD (or Greatest Common Divisor) is one of the fundamental concepts in mathematics and programming to calculate the greatest common divisor of two or more numbers, i.e., the Greatest Common Divisor refers to the largest number that can evenly divide two or more integers without leaving a remainder.

How do you find the GCD of two complex numbers?
- It involves repeated division and taking remainders. Given two Gaussian integers a and b, compute a = bq + r where q and r are Gaussian integers and the norm of r is less than the norm of b. Repeat with b and r until the remainder is zero. The last non-zero remainder is the GCD.

What is the best algorithm for GCD?
- The Euclidean algorithm

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