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Initial data commit

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Ingy döt Net 2023-07-01 11:58:00 -04:00
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Task/Hailstone-sequence/ZX-Spectrum-Basic/hailstone-sequence.basic Normal file
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10 LET n=27: LET s=1
20 GO SUB 1000
30 PRINT '"Sequence length = ";seqlen
40 LET maxlen=0: LET s=0
50 FOR m=2 TO 100000
60 LET n=m
70 GO SUB 1000
80 IF seqlen>maxlen THEN LET maxlen=seqlen: LET maxnum=m
90 NEXT m
100 PRINT "The number with the longest hailstone sequence is ";maxnum
110 PRINT "Its sequence length is ";maxlen
120 STOP
1000 REM Hailstone
1010 LET l=0
1020 IF s THEN PRINT n;" ";
1030 IF n=1 THEN LET seqlen=l+1: RETURN
1040 IF FN m(n,2)=0 THEN LET n=INT (n/2): GO TO 1060
1050 LET n=3*n+1
1060 LET l=l+1
1070 GO TO 1020
2000 DEF FN m(a,b)=a-INT (a/b)*b