Given a decimal number as input, the task is to write a Python program to convert the given decimal number into an equivalent binary number.
Examples :
Input : 7 Output :111 Input :10 Output :1010
Method #1: Recursive solution
DecimalToBinary(num): if num >= 1: DecimalToBinary(num // 2) print num % 2
Below is the implementation of the above recursive solution:
# Function to convert decimal number # to binary using recursion def DecimalToBinary(num):
if num > = 1 :
DecimalToBinary(num / / 2 )
print (num % 2 , end = '')
# Driver Code if __name__ = = '__main__' :
# decimal value
dec_val = 24
# Calling function
DecimalToBinary(dec_val)
|
011000
Method #2: Decimal to binary using in-built function
# Python program to convert decimal to binary # Function to convert Decimal number # to Binary number def decimalToBinary(n):
return bin (n).replace( "0b" , "")
# Driver code if __name__ = = '__main__' :
print (decimalToBinary( 8 ))
print (decimalToBinary( 18 ))
print (decimalToBinary( 7 ))
|
1000 10010 111
Method #3:Without in-built function
# Python program to convert decimal to binary # Function to convert Decimal number # to Binary number def decimalToBinary(n):
return "{0:b}" . format ( int (n))
# Driver code if __name__ = = '__main__' :
print (decimalToBinary( 8 ))
print (decimalToBinary( 18 ))
print (decimalToBinary( 7 ))
|
1000 10010 111
Quick Ninja Method: One Line Code to Convert Decimal to Binary with user input
# Quick Ninja One line Code print ( bin ( 4785 )[ 2 :])
|
1001010110001
or
# Use this for user input #decNum = int(input("Enter any Decimal Number: ")) decNum = 4785
print ( bin (decNum)[ 2 :])
decNum1 = 10
print ( bin (decNum1)[ 2 :])
decNum2 = 345
print ( bin (decNum2)[ 2 :])
|
1001010110001 1010 101011001
Using the bitwise shift operator >>.
def dec2bin(number: int ):
ans = ""
if ( number = = 0 ):
return 0
while ( number ):
ans + = str (number& 1 )
number = number >> 1
ans = ans[:: - 1 ]
return ans
def main():
number = 60
print (f "The binary of the number {number} is {dec2bin(number)}" )
# driver code if __name__ = = "__main__" :
main()
|
The binary of the number 60 is 111100
Using built-in format method:
Another approach that is using the built-in format() function. This approach involves converting the decimal number to an integer and then using the format() function with the ‘b’ format specifier to convert it to a binary string. The binary string can then be printed or stored for later use.
Here is an example of how this approach can be used:
def decimal_to_binary(decimal_num):
binary_str = format ( int (decimal_num), 'b' )
return binary_str
print (decimal_to_binary( 7 )) # prints 111
print (decimal_to_binary( 10 )) # prints 1010
#This code is contributed by Edula Vinay Kumar Reddy |
111 1010