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| from random import randint
from operator import mul
from timeit import Timer
taille_liste = 200
L = [randint(9807,10200)/10000. for i in xrange(taille_liste)]
L2 = L[:]
def prod(x,y):
return x*y
def calcli3(li):
liaux = [1]
[liaux.append( mul(liaux.pop(),x)) for x in L]
return liaux.pop()
print 'calcli3 ',calcli3(L),L==L2
def calcli2(li):
liaux = [1]
[liaux.append(liaux.pop()*x) for x in L]
return liaux.pop()
print 'calcli2 ',calcli2(L),L==L2
def calcli(li):
liaux = [1]
[liaux.append( liaux[-1]*x) for x in L]
return liaux.pop()
print 'calcli ',calcli(L),L==L2
def redlambda(li):
return reduce(lambda x,y:x*y , li)
print 'reduce lambda ',redlambda(L),L==L2
def redtyr(li):
return (len(li)==0 and [None] or [reduce(lambda x,y : x*y, li)])[0]
print 'redtyr ',redtyr(L),L==L2
def redprod(li):
return reduce(prod,li)
print 'reduce prod ',redprod(L),L==L2
def iterante(li):
x = 1
for y in li:
x*=y
return x
print 'iterante ',iterante(L),L==L2
def redmul(li):
return reduce(mul,li)
print 'reduce mul ',redmul(L),L==L2
def affiter(t):
if 'e' in repr(min(t)):
miin1,_,miin2 = repr(min(t)).partition('e')
miin = miin1[0:5].rjust(5) + ' e' + miin2
else:
miin = repr(min(t))[0:9]
if 'e' in repr(sum(t)/len(t)):
suum1,_,suum2 = repr(sum(t)/len(t)).partition('e')
suum = suum1[0:5].rjust(5) + ' e' + suum2
else:
suum = repr(min(t))[0:9]
print 'min ',miin.ljust(15),'moy ',suum.ljust(15),\
'= moyenne m iterative x*=y'
def aff(t,m,nom):
if 'e' in repr(min(t)):
miin1,_,miin2 = repr(min(t)).partition('e')
miin = miin1[0:5].rjust(5) + ' e' + miin2
else:
miin = repr(min(t))[0:9]
if 'e' in repr(sum(t)/len(t)):
suum1,_,suum2 = repr(sum(t)/len(t)).partition('e')
suum = suum1[0:5].rjust(5) + ' e' + suum2
else:
suum = repr(min(t))[0:9]
print 'min ',miin.ljust(15),'moy ',suum.ljust(15),\
'=',str(100*sum(t)/len(t)/m)[0:5],'% de m '+nom
for taille_liste in [3,6,12,24,40,80,160]:
print 3*'-----------'+'- ENTIERS '+4*'---------'+' taille de liste =',taille_liste,'---'
L = [randint(1,12) for i in xrange(taille_liste)]
repet,iterat = 5,50
tcalcli3 = Timer('calcli3(L)','from __main__ import calcli3,L').repeat(repet,iterat)
tcalcli2 = Timer('calcli2(L)','from __main__ import calcli2,L').repeat(repet,iterat)
tcalcli = Timer('calcli(L)','from __main__ import calcli,L').repeat(repet,iterat)
tredlambda = Timer('redlambda(L)','from __main__ import redlambda,L').repeat(repet,iterat)
tredtyr = Timer('redtyr(L)','from __main__ import redtyr,L').repeat(repet,iterat)
tredprod = Timer('redprod(L)','from __main__ import redprod,L').repeat(repet,iterat)
titer = Timer('iterante(L)','from __main__ import iterante,L').repeat(repet,iterat)
tredmul = Timer('redmul(L)','from __main__ import redmul,L').repeat(repet,iterat)
m = sum(titer)/len(titer)
aff(tcalcli3,m,'liste aux, pop et mul')
aff(tcalcli2,m,'liste aux, pop et *')
aff(tcalcli,m,'liste aux et *')
aff(tredtyr,m,'reduce tyr')
aff(tredlambda,m,'reduce lambda')
aff(tredprod,m,'reduce prod')
affiter(titer)
aff(tredmul,m,'reduce mul')
print '==============================='
tcalcli3 = Timer('calcli3(L)','from __main__ import calcli3,L').repeat(repet,iterat)
tcalcli2 = Timer('calcli2(L)','from __main__ import calcli2,L').repeat(repet,iterat)
tcalcli = Timer('calcli(L)','from __main__ import calcli,L').repeat(repet,iterat)
tredlambda = Timer('redlambda(L)','from __main__ import redlambda,L').repeat(repet,iterat)
tredtyr = Timer('redtyr(L)','from __main__ import redtyr,L').repeat(repet,iterat)
tredprod = Timer('redprod(L)','from __main__ import redprod,L').repeat(repet,iterat)
titer = Timer('iterante(L)','from __main__ import iterante,L').repeat(repet,iterat)
tredmul = Timer('redmul(L)','from __main__ import redmul,L').repeat(repet,iterat)
m = sum(titer)/len(titer)
aff(tcalcli3,m,'liste aux, pop et mul')
aff(tcalcli2,m,'liste aux, pop et *')
aff(tcalcli,m,'liste aux et *')
aff(tredtyr,m,'reduce tyr')
aff(tredlambda,m,'reduce lambda')
aff(tredprod,m,'reduce prod')
affiter(titer)
aff(tredmul,m,'reduce mul')
print '========================'
tcalcli3 = Timer('calcli3(L)','from __main__ import calcli3,L').repeat(repet,iterat)
tcalcli2 = Timer('calcli2(L)','from __main__ import calcli2,L').repeat(repet,iterat)
tcalcli = Timer('calcli(L)','from __main__ import calcli,L').repeat(repet,iterat)
tredlambda = Timer('redlambda(L)','from __main__ import redlambda,L').repeat(repet,iterat)
tredtyr = Timer('redtyr(L)','from __main__ import redtyr,L').repeat(repet,iterat)
tredprod = Timer('redprod(L)','from __main__ import redprod,L').repeat(repet,iterat)
titer = Timer('iterante(L)','from __main__ import iterante,L').repeat(repet,iterat)
tredmul = Timer('redmul(L)','from __main__ import redmul,L').repeat(repet,iterat)
m = sum(titer)/len(titer)
aff(tcalcli3,m,'liste aux, pop et mul')
aff(tcalcli2,m,'liste aux, pop et *')
aff(tcalcli,m,'liste aux et *')
aff(tredtyr,m,'reduce tyr')
aff(tredlambda,m,'reduce lambda')
aff(tredprod,m,'reduce prod')
affiter(titer)
aff(tredmul,m,'reduce mul') |
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