#Greg Considine #Project Euler -- Problem 9 import math def coprime(x,y): min = x if x < y else y for i in range(2, math.ceil(math.sqrt(min)) + 1): if x % i == 0 and y % i == 0: return False return True def odd(x): if x % 2 == 0: return False else: return True def pythagorean(x,y,z): if (math.pow(x,2) + math.pow(y,2)) == math.pow(z,2): return True else: return False m = 2 n = 1 a = b = c = 0 total = 0 found = False while found == False: while n < 100 and found == False: if coprime(m,n) and odd(m-n): a = (math.pow(m,2) - math.pow(n,2)) b = 2 * m * n c = (math.pow(m,2) + math.pow(n,2)) if pythagorean(a,b,c): total = a + b + c if total == 1000: found = True print(a * b * c) n += 1 else: n += 1 m += 1 n = 1 ''' This was probably the most challenging problem yet and my solution isn't very elegant. I had to read up on Pythagorean triples and coprime numbers. I used Euclid's formula to generate pythagorean triples with incrementing values of m and n. I was going to manually increase the limits of n if no solution was found -- not exactly a one-size-fits-all algorithm but it works. '''