Granny's Programming Pearls
"inside of every large program is a small program struggling to get out"
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Extended Euclidean Algorithm

 
Cheryl Scodario
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Posts: 69
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Hi all, I am doing an encryption program, and need to find the x and y in this formula: gcd(a,b)=a*x+b*y;
I know the idea is to follow the steps of the actual Euclidean algorithm, and then just doing everything backwards, but I don't know how to put that in code.
One thing to note, gcd (a, b) will be 1 in my case, because a and b are coprime. so basically we are looking at 1=a*x+b*y and find x and y.
Please give me some hints!

Thanks.
 
Paul Clapham
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Then first explain in words how to do it. The second step would be to change those words into code.
 
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