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수치함수 - srand,소수,소인수,최소공배수,최대공약수,약분,반올림
# 83 JMJS    09.5.7 09:33

#!/bin/perl

srand($ARGV[0] + $ $^ time); rand();

sub round { my ($n,$d) = @_;
        return int($n/(10**$d)+.5*($n <=> 0))*(10**$d);
}

sub RoundXL { sprintf("%.$_[1]f", $_[0]);}

$avg= &RoundXL($avg, 3);


print "SoSu=(".join(",",&SoSu(10000)).")\n";
for($n=1100;$n<1200;$n+=1) { print "$n=(".join(",",&SoInSu($n)).")\n";}

sub SoSu{my($m)=@_;my@o;I:for(my$i=2;$i<$m;$i++){foreach$n(@o){if($i%$n==0){next I;}}push(@o,$i);}@o;}

sub SoInSu{my($n)=@_;my@o;for(my$i=2;$i<=$n;$i++){while($n%$i==0){push(@o,$i);$n/=$i;}}@o;}

sub GCD{my($a,$b)=@_;while($b!=0){$t=$b;$b=$a%$b;$a=$t;}$a;}

sub LCM{my($a,$b)=@_;return$a*$b/&GCD($a,$b);}

sub YakBun{my($a,$b)=@_;my$c=&GCD($a,$b);($a/$c,$b/$c);}

게시물: 107 건, 현재: 1 / 2 쪽
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