Question

Write a recursive function named double_digits that accepts an integer as a parameter and returns the integer obtained by replacing every digit with two of that digit. For example, double_digits(348) should return 334488. The call double_digits(0) should return 0. Calling your function on a negative number should return the negation of calling it on the corresponding positive number; for example, double_digits(-789) should return -778899.

Answer 1

Answer:

A recursive function known as double-digit is a function that accepts as a parameter and returns the integer that is obtained by changing each digit with double digits. For example 425 should be return as 442255.

In the given scenario

the function will be as follow

If

def double_digits:

n < 0:

return -1 * double_digits ( -1 * n )

elif n = 0

return o

else:

result

double_digits ( n // 10 )

return int ( str ( result ) + str ( n % 10 ) + str ( n % 10 )

Test the function as follow

print ( double_digits ( 348 ) )

Result

334488

Test the function as follow

print ( double_digits ( 0 ) )

Result

0

Test the function as follow

print ( double_digits ( -789 ) )

Result

-778899