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Solution: Euclidean Algorithm

Explore how the Euclidean Algorithm calculates the greatest common divisor of two numbers using a divide and conquer approach. Understand both recursive and iterative solutions, and grasp the efficiency of the algorithm with a logarithmic time complexity, enabling you to solve related coding interview problems effectively.

How does the Euclidean Algorithm work?

The Euclidean algorithm is based on the principle that the greatest common divisor of two numbers does not change if the larger value of the two is replaced by the difference between both numbers.

Let’s look at an example:

The GCD of 252252 and 105105 is 2121 (252252 = 2121 x 1212 and 105105 = 2121 x ...

Source: https://en.wikipedia.org/wiki/Euclidean_algorithm
Source: https://en.wikipedia.org/wiki/Euclidean_algorithm