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Tina Müller 2016-12-05 23:44:36 +01:00
parent 9dc3c2bb62
commit bba7bfd280
13208 changed files with 134745 additions and 0 deletions
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8
Task/Hofstadter-Q-sequence/Sidef/hofstadter-q-sequence-1.sidef Normal file
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func Q(n) is cached {
n <= 2 ? 1
: Q(n - Q(n-1))+Q(n-Q(n-2))
}
say "First 10 terms: #{10.of {|n| Q(n) }.dump }"
say "Term 1000: #{Q(1000)}"
say "Terms less than preceding in first 100k: #{2..100000->count{|i|Q(i)<Q(i-1)}}"

8
Task/Hofstadter-Q-sequence/Sidef/hofstadter-q-sequence-2.sidef Normal file
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var Q = [0, 1, 1];
100_000.times {
Q << (Q[-Q[-1]] + Q[-Q[-2]])
}
say "First 10 terms: #{Q.ft(1, 10).dump}"
say "Term 1000: #{Q[1000]}"
say "Terms less than preceding in first 100k: #{2..100000->count{|i|Q[i]<Q[i-1]}}"