13 lines
504 B
Text
13 lines
504 B
Text
var valid = {123, 12345, 1234567, 987654321, 10001, -10001, -123, -100, 100, -12345}
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valid.each(\ num ->print(middleThree(num)))
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var errant = {1, 2, -1, -10, 2002, -2002, 0}
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errant.each(\ num ->print(middleThree(num)))
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function middleThree(x: int) : String {
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var s = Math.abs(x) as String
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if(s.length < 3) return "Error: ${x} has less than 3 digits"
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if(s.length % 2 == 0) return "Error: ${x} has an even number of digits"
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var start = (s.length / 2) - 1
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return s.substring(start, start + 3)
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}
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