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Ingy döt Net 2023-07-01 11:58:00 -04:00
parent 7387c8f97b
commit cb5bb5e222
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33
Task/Attractive-numbers/XPL0/attractive-numbers.xpl0 Normal file
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func IsPrime(N); \Return 'true' if N is prime
int N, I;
[if N <= 2 then return N = 2;
if (N&1) = 0 then \even >2\ return false;
for I:= 3 to sqrt(N) do
[if rem(N/I) = 0 then return false;
I:= I+1;
];
return true;
];
func Factors(N); \Return number of factors for N
int N, Cnt, F;
[Cnt:= 0;
F:= 2;
repeat if rem(N/F) = 0 then
[Cnt:= Cnt+1;
N:= N/F;
]
else F:= F+1;
until F > N;
return Cnt;
];
int C, N;
[C:= 0;
for N:= 4 to 120 do
if IsPrime(Factors(N)) then
[IntOut(0, N);
C:= C+1;
if rem(C/10) then ChOut(0, 9\tab\) else CrLf(0);
];
]