from time import time

nmax = 10000

x = 1
start = time()
while x < nmax: # 10K = 0.01s, 100K = 0.13s, 1M = 1.7s
  y = []
  tmp = x * x * x
  while tmp > 0:
    y.append(tmp % 10)
    tmp /= 10
  x += 1
print "numerical", time() - start

x = 1
start = time()
while x < nmax: # 10K = 0.08s, 100K = 0.8s, 1M = 11s
  y = map(int,str(x*x*x))
  x += 1
print "map", time() - start

x = 1
start = time()
while x < nmax: # 10K = 0.03s, 100K = 0.3s, 1M = 3s
  y = [int(ch) for ch in str(x*x*x)]
  x += 1
print "comprehension", time() - start

x = 1
start = time()
while x < nmax: # 10K = 0.05s, 100K = 0.28s, 1M = 3.4s
  y = []
  for ch in str(x*x*x):
    y.append(int(ch))
  x += 1
print "iterative", time() - start

x = 1
start = time()
while x < nmax: # 10K = 0.04s, 100K = 0.33s, 1M = 3.8s
  y = []
  for ch in str(x*x*x):
    y += [int(ch)]
  x += 1
print "+ list", time() - start