题解 | #求int型正整数在内存中存储时1的个数#
求int型正整数在内存中存储时1的个数
http://www.nowcoder.com/practice/440f16e490a0404786865e99c6ad91c9
An easy Python solution.
i = int(input())
b = str(bin(i)). #bin() turns integer into binary
p = 0
for count in b:
if (count == str(1)):
p += 1
print(p) 
