Roman numerals/Decode: Difference between revisions
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Modern Roman numerals are written by expressing each digit separately starting with the left most digit and skipping any digit with a value of zero. In Roman numerals 1990 is rendered: 1000=M, 900=CM, 90=XC; resulting in MCMXC. 2008 is written as 2000=MM, 8=VIII; or MMVIII. 1666 uses each Roman symbol in descending order: MDCLXVI. |
Modern Roman numerals are written by expressing each digit separately starting with the left most digit and skipping any digit with a value of zero. In Roman numerals 1990 is rendered: 1000=M, 900=CM, 90=XC; resulting in MCMXC. 2008 is written as 2000=MM, 8=VIII; or MMVIII. 1666 uses each Roman symbol in descending order: MDCLXVI. |
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=={{header|J}}== |
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<lang j>rom2d=: [: (+/ .* _1 ^ 0,~2 </\]) 1 5 10 50 100 500 1000 {~ 'IVXLCDM'&i.</lang> |
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Example use: |
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<lang j> rom2d 'MCMXC' |
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1990 |
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rom2d 'MDCLXVI' |
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1666 |
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rom2d 'MMVIII' |
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2008</lang> |
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=={{header|Zsh}}== |
=={{header|Zsh}}== |
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