Ethiopian multiplication: Difference between revisions
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(→{{header|J}}: Removed second section as contrary to the comment, it does not obey the letter of the task description as it fails to use the three functions.) |
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import "fmt" |
import "fmt" |
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func halve(i int) int { return i |
func halve(i int) int { return i/2 } |
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func double(i int) int { return i |
func double(i int) int { return i*2 } |
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func isEven(i int) bool { return |
func isEven(i int) bool { return i%2 == 0 } |
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func ethMulti(i, j int) (r int) { |
func ethMulti(i, j int) (r int) { |
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for ; i > 0; i, j = halve(i), double(j) { |
for ; i > 0; i, j = halve(i), double(j) { |
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if !isEven(i) { |
if !isEven(i) { |
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r += j |
r += j |
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} |
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} |
} |
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| ⚫ | |||
} |
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| ⚫ | |||
} |
} |
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func main() { |
func main() { |
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fmt.Printf("17 ethiopian 34 = %d\n", ethMulti(17, 34)) |
fmt.Printf("17 ethiopian 34 = %d\n", ethMulti(17, 34)) |
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} |
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</lang> |
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=={{header|Haskell}}== |
=={{header|Haskell}}== |
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