Python Program to Print Binary Equivalent of an Integer using Recursion

This is a Python Program to find the binary equivalent of a number recursively.

Problem Description

The program takes a number and finds the binary equivalent of a number recursively.

Problem Solution

1. Define a recursive function which takes a number as the argument.
2. Take a number from the user and pass it as an argument to a recursive function.
3. In the function, put the base condition that if the number is zero, return the formed list.
4. Otherwise, convert each digit into binary and append it to the list.
5. Reverse the list and using a for loop print the elements of the list.
6. Exit.

Program/Source Code

Here is source code of the Python Program to find the binary equivalent of a number recursively. The program output is also shown below.

l=[]
def convert(b):
    if(b==0):
        return l
    dig=b%2
    l.append(dig)
    convert(b//2)
a=int(input("Enter a number: "))
convert(a)
l.reverse()
print("Binary equivalent:")
for i in l:
    print i,
Program Explanation

1. A recursive function is defined which takes a number as the argument.
2. A number is taken from the user and passed as an argument to a recursive function.
3. In the function, the base condition is that if the number is zero, the formed list is returned.
4. Otherwise, each digit is converted into binary and appended to the list.
5. The list is reversed and a for loop is used to print the elements of the list.

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Runtime Test Cases
 
Case 1:
Enter a number: 20
Binary equivalent:
1 0 1 0 0
 
Case 2:
Enter a number: 7
Binary equivalent:
1 1 1

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Manish Bhojasia, a technology veteran with 20+ years @ Cisco & Wipro, is Founder and CTO at Sanfoundry. He lives in Bangalore, and focuses on development of Linux Kernel, SAN Technologies, Advanced C, Data Structures & Alogrithms. Stay connected with him at LinkedIn.

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