Question

Define a function named double_add_digits_in_string(...) which receives a string as a parameter and returns the sum of the digits multiplied by two. A solution using a loop is expected.

As an example, the following code fragment:

total = double_add_digits_in_string("xx1xx2xx3xx") print (total)

should produce the output:

12

Answer 1

def double_add_digits_in_string(st):
    # Initialize total to zero
    total = 0
    # Looping through each character
    for x in st:
        # checking x is a digit
        if(x>='0' and x<='9'):
            # adding int value of x to total
            total += int(x)
    # Returning double of total
    return 2*total

# Testing
total = double_add_digits_in_string("xx1xx2xx3xx")
print (total)

$\color{blue}\underline{Output:}$

12