Talk:Popular problem

It might be nice to have a list of languages in which the more difficult problems (e.g. quine) have been solved. Adding a category might be too much, though... any thoughts? --Graue 16:03, 12 Jun 2005 (GMT)

Why not make that a sub section of the Quine article. This should also include links to the programs. --Rune 16:16, 12 Jun 2005 (GMT)

Pie calculator

I found some good Python programs that can work out the digits of pie.

# A new way to calculate pie
a4=1
num=1
denom=1
for i in range(1,5000):
	a2=1
	a3=0
	for a1 in range(i,-1,-2):
		a3=a3+a2
		a2=-a2*a1*(a1-1) # layer 2 ends
	a4=a4+a3
	num=num*(i+1)
	denom=denom*(i+1)
	num=num+a4
	pie=4*num/denom
	print(i,' ',pie) # layer 1 ends

num=1
denom=1
for i in range(2,500,1):
    a1=1
    a3=1
    a5=0
    for a1 in range(1,i+1,2):
        a2=1
        b1=1
        b2=i
        for b1 in range(1,a1+1,1):
            a2*=b2
            a2=a2//b1
            b2-=1
        a3*=(a1-2)*(a1-2)
        a5+=a2*a3
    num=num*i+a5
    denom*=i
    print(i,' ',2*num/denom)
a1=1

Happy pie day!