Question

Write a function called double_str that takes a string argument and returns a new string that has all of the same characters as the argument, except each one is repeated twice. For example:

double_str('dog') --> 'ddoogg'

looking for python coding below is what I have so far

double_str = 'robert'

double_str 'robert'

for i in range(len(double_str)):

print(double_str[i])

Answer 1

Here is the completed code for this problem. Assuming the language is Python. Comments are included, go through it, learn how things work and let me know if you have any doubts or if you need anything to change. If you are satisfied with the solution, please rate the answer. Thanks

Note: Please maintain proper code spacing (indentation), just copy the code part and paste it in your compiler/IDE directly, no modifications required. Also this method uses iterative approach. If you are looking for a recursive method, just let me know, I’ll update the code quickly.

#code

#required method
def double_str(text):
    #creating an empty string to store the result
    updated = ''
    #looping through each character in text
    for c in text:
        #appending c to updated, twice
        updated += c + c
    #returning the updated string
    return updated


#testing
print(double_str('dog'))  # ddoogg
print(double_str('hello'))  # hheelllloo