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Initial data commit

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Ingy döt Net 2023-07-01 11:58:00 -04:00
parent 72d218235f
commit f23f22d71c
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19
Task/Hailstone-sequence/Forth/hailstone-sequence.fth Normal file
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: hail-next ( n -- n )
dup 1 and if 3 * 1+ else 2/ then ;
: .hail ( n -- )
begin dup . dup 1 > while hail-next repeat drop ;
: hail-len ( n -- n )
1 begin over 1 > while swap hail-next swap 1+ repeat nip ;
27 hail-len . cr
27 .hail cr
: longest-hail ( max -- )
0 0 rot 1+ 1 do ( n length )
i hail-len 2dup < if
nip nip i swap
else drop then
loop
swap . ." has hailstone sequence length " . ;
100000 longest-hail