16 lines
622 B
Text
16 lines
622 B
Text
func is_gapful(n, base=10) {
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n.is_div(base*floor(n / base**n.ilog(base)) + n%base)
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}
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var task = [
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"(Required) The first %s gapful numbers (>= %s)", 30, 1e2, 10,
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"(Required) The first %s gapful numbers (>= %s)", 15, 1e6, 10,
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"(Required) The first %s gapful numbers (>= %s)", 10, 1e9, 10,
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"(Extra) The first %s gapful numbers (>= %s)", 10, 987654321, 10,
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"(Extra) The first %s gapful numbers (>= %s)", 10, 987654321, 12,
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]
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task.each_slice(4, {|title, n, from, b|
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say sprintf("\n#{title} for base #{b}:", n, from.commify)
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say (from..Inf -> lazy.grep{ is_gapful(_,b) }.first(n).join(' '))
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})
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