Python program to print the binary value of the numbers from 1 to N

Given a positive number N, the task here is to print the binary value of numbers from 1 to N. For this purpose various approaches can be used. 

The binary representation of a number is its equivalent value using 1 and 0 only. Example for k = 15, binary value is 1 1 1 1

WORKING FOR METHOD 1

Method 1: Using the Elementary method with recursion.

Approach

• Divide k by 2.
• Recursive call on the function and print remainder while returning from the recursive call.
• Repeat the above steps till the k is greater than 1.
• Repeat the above steps till we reach N

Program:

Python3

# code to print binary values of first 5 numbers

# recursive function
def Print_Binary_Values(num):
    # base condition
    if(num > 1):
        Print_Binary_Values(num // 2)
    print(num % 2, end="")


# driver code
if __name__ == "__main__":
    N = 5

    # looping N times
    for i in range(1, N+1):
        Print_Binary_Values(i)
        print(end=" ")

Output

1 10 11 100 101 

Method 2: Using Bitwise Operator.

Approach

• Check if k > 1
• Right shift the number by 1 bit and perform a recursive call on the function
• Print the bits of number
• Repeat the steps till we reach N

Program:

Python3

# code to print binary values of first 5 numbers

# recursive function


def Print_Binary_Values(num):

    # base condition
    if(num > 1):
        Print_Binary_Values(num >> 1)
    print(num & 1, end="")


# driver code
if __name__ == "__main__":
    N = 5

    # looping N times
    for i in range(1, N+1):
        Print_Binary_Values(i)
        print(end=" ")

Output

1 10 11 100 101 

Method 3: Using Inbuilt Library of Python

bin() is an inbuilt python function that can convert any decimal number given to it as input to its equivalent binary.

Syntax:

bin (number) 

here number is the decimal number that gets converted to binary 

Program

Python3

# code to print first 5 binary number using builtIn library


def Print_Binary_Number(num):
    for i in range(1, num+1):

        # using bin to print binary value
        print(int(bin(i).split('0b')[1]), end=" ")


# driver code
if __name__ == "__main__":
    num = 5
    Print_Binary_Number(num)

Output

1 10 11 100 101