Roman numerals/Decode: Difference between revisions
→{{header|K}}: Add JavaScript
(→{{header|Logo}}: format output, fix syntax) |
(→{{header|K}}: Add JavaScript) |
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Line 599:
2008
1666</pre>
=={{header|JavaScript}}==
<lang javascript>var Roman = {
Values: [['M', 1000], ['CM', 900], ['D', 500], ['CD', 400],
['C', 100], ['XC', 90], ['L', 50], ['XL', 40],
['X', 10], ['IX', 9], ['V', 5], ['IV', 4],
['I', 1]],
parse: function(str) {
var result = 0
for (var i=0; i<Roman.Values.length; ++i) {
var pair = Roman.Values[i]
var key = pair[0]
var value = pair[1]
var regex = RegExp('^' + key)
while (str.match(regex)) {
result += value
str = str.replace(regex, '')
}
}
return result
}
}
var test_data = ['MCMXC', 'MDCLXVI', 'MMVIII']
for (var i=0; i<test_data.length; ++i) {
var test_datum = test_data[i]
print(test_datum + ": " + Roman.parse(test_datum))
}</lang>
<output>MCMXC: 1990
MDCLXVI: 1666
MMVIII: 2008
</output>
=={{header|K}}==
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