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
https://www.nowcoder.com/practice/440f16e490a0404786865e99c6ad91c9
ent = int(input())
if ent < 0:
print("输入数字为负数！")
else:
out = str(bin(ent)[2:])
sum = 0
for i in out:
if i == '1':
sum += 1
print(sum)
