''' Functions From Statistical Mechanics by Werner Krauth ''' import random import math def directsampling(n,r): data=[] print 'Direct Sampling Case' print 'Runs Number Hits estimate of pi' for jj in range(r): nhits = 0 for ii in range(n): x=random.uniform(-1,1) y=random.uniform(-1,1) if (x**2+y**2) < 1: nhits= nhits + 1 print str(jj)+' '+str(nhits)+' '+str(4.0*nhits/n) data.append([jj,nhits]) return data r=5 n=4000 hits=directsampling(n,r)
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