23 lines
500 B
Crystal
23 lines
500 B
Crystal
require "./euler"
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module Euler
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module Problem009
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extend self
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def generate_pythagorean_triples(upper_bound)
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([] of Array(Euler::NumType)).tap do |triples|
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(2..upper_bound).each do |a|
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(a..upper_bound).each do |b|
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c = Math.sqrt(a**2 + b**2)
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triples << [a, b, c.to_i] if c % 1 == 0
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end
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end
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end
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end
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def solution
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generate_pythagorean_triples(500).find([-1]) { |x| x.sum == 1000 }.product
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end
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end
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end
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