30 lines
494 B
Nim
30 lines
494 B
Nim
import strutils
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proc count(s: string, sub: char): int =
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var i = 0
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while true:
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i = s.find(sub, i)
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if i < 0:
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break
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inc i
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inc result
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proc popcount(n): int = n.toBin(64).count('1')
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const primes = {2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61}
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var p = newSeq[int]()
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var i = 0
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while p.len < 25:
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if popcount(i) in primes: p.add i
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inc i
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echo p
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p = @[]
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i = 888_888_877
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while i <= 888_888_888:
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if popcount(i) in primes: p.add i
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inc i
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echo p
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