number of ones

Question

maybe it help you friend

Answer 1

decimal_number = int(input())
binary_number = bin(decimal_number)
kick_prefix = binary_number[2:]
build_list = list(kick_prefix)

a = 0

for i in build_list:
if i == '1':
a += 1
else:
continue
print(a)

Answer 2

a=kick_prefix.count("1")

Answer 3

x = int(input())
y=''
while True:
y += str(x % 2)
x = x // 2
if x // 2 == 0:
break
y= y+ '1'
print(y.count('1'))

Answer 4

print(str(bin(int(input()))).count('1'))

The long version:

decimal_number = int(input())
binary_number = bin(decimal_number)
binary_string = str(binary_number)
number_of_ones = binary_string.count('1')
print(number_of_ones)

Explanation:
-Turn the given integer into a binary number. E.g.
24 -> 11000
-Turn the binary number into a string. E.g.
11000 -> "11000"
-Use the .count() function to count how many times the "1" character appears in the string