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18 lines
382 B
Ruby
18 lines
382 B
Ruby
# Insertion sort algorithm,
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# uses N^2/4 compares and N^2/4 exchanges to sort a randomly ordered array,
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# see test/insertion_sort_test.rb
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module Insertion
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def self.sort(array)
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1.upto(array.size - 1) do |i|
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j = i
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while j > 0 && array[j] < array[j - 1]
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array[j], array[j - 1] = array[j - 1], array[j]
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j -= 1
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end
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end
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array
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end
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end
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