Largest palindrome product: Difference between revisions
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Found in 6 iterations |
Found in 6 iterations |
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done...</pre> |
done...</pre> |
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=={{header|Sidef}}== |
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<lang ruby>func largest_palindrome_product (n) { |
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for k in ((10**n - 1) `downto` 10**(n-1)) { |
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var t = Num("#{k}#{Str(k).flip}") |
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t.divisors.grep{.len == n}.combinations(2, {|a,b| |
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if (a*b == t) { |
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return (a, b) |
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} |
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}) |
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} |
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} |
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for n in (2..9) { |
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var (a,b) = largest_palindrome_product(n) |
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say "Largest palindromic product of two #{n}-digit integers: #{a} * #{b} = #{a*b}" |
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}</lang> |
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{{out}} |
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<pre> |
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Largest palindromic product of two 2-digit integers: 91 * 99 = 9009 |
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Largest palindromic product of two 3-digit integers: 913 * 993 = 906609 |
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Largest palindromic product of two 4-digit integers: 9901 * 9999 = 99000099 |
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Largest palindromic product of two 5-digit integers: 99681 * 99979 = 9966006699 |
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Largest palindromic product of two 6-digit integers: 999001 * 999999 = 999000000999 |
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Largest palindromic product of two 7-digit integers: 9997647 * 9998017 = 99956644665999 |
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Largest palindromic product of two 8-digit integers: 99990001 * 99999999 = 9999000000009999 |
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Largest palindromic product of two 9-digit integers: 999920317 * 999980347 = 999900665566009999 |
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</pre> |
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=={{header|Wren}}== |
=={{header|Wren}}== |