最新回答 / qq_于志达_04372457
sum = 0x = 1n = 1while True: if n > 20: break sum = sum + x x = x * 2 n = n + 1print sum1048575然而sum = 0x = 1n = 1while True: if n > 20: break n = n + 1 x = x * 2 sum = sum + xprint (sum)2097150为什么?
2016-10-17
print [int(a + b + a) for a in '123456789' for b in '0123456789' ]
最清晰。没有之一。
最清晰。没有之一。
2016-10-17
L = [75, 92, 59, 68]
sum = 0.0
count = len(L)
for score in L:
sum += score
print sum / count
sum = 0.0
count = len(L)
for score in L:
sum += score
print sum / count
2016-10-17
y=0
for x in range(1,101):
y=y+x*x
print y
L= [x*x for x in range(1,101)]
print sum(L)
for x in range(1,101):
y=y+x*x
print y
L= [x*x for x in range(1,101)]
print sum(L)
2016-10-16