Ethiopian multiplication: Difference between revisions
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m (→{{header|Python}}: Spacing) |
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(multiplier, multiplicand) ) |
(multiplier, multiplicand) ) |
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result += multiplicand |
result += multiplicand |
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multiplier = halve(multiplier) |
multiplier = halve(multiplier) |
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multiplicand = double(multiplicand) |
multiplicand = double(multiplicand) |
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if tutor: print() |
if tutor: print() |
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Without the tutorial code, and taking advantage of Python's lambda: |
Without the tutorial code, and taking advantage of Python's lambda: |
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<lang python>halve = lambda x: x // 2 |
<lang python>halve = lambda x: x // 2 |
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double = lambda x: x*2 |
double = lambda x: x*2 |
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even = lambda x |
even = lambda x: not x % 2 |
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def ethiopian(multiplier, multiplicand): |
def ethiopian(multiplier, multiplicand): |
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if not even(multiplier): |
if not even(multiplier): |
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result += multiplicand |
result += multiplicand |
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multiplier = halve(multiplier) |
multiplier = halve(multiplier) |
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multiplicand = double(multiplicand) |
multiplicand = double(multiplicand) |
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