For problem A you will be writing two different functions to iterate through a string. One function will use recursion and the other will use a loop. Write two functions rec_sum_digits and loop_sum_digits both of which accept a single string argument st. Both functions should return an integer representing the sum of all of the digits in the string. If there are no digits in the string the function should return 0. You are permitted to use the string method.isdigit() to check whether a given character is a digit. Constraints: • loop_sum_digits digits must use either a for loop or a while loop to the solve the problem loop_sum_digits digits must not use recursion to solve the problem rec_sum_digits • • digits must use recursion to solve the problem • rec_sum_digits must not use any kind of for or while loop to solve the problem Given the same inputs rec_sum_digits and loop_sum_digits should return the same value (given enough time and computer memory, and no maximum recursion depth) You cannot use the sum function
For problem A you will be writing two different functions to iterate through a string. One function will use recursion and the other will use a loop. Write two functions rec_sum_digits and loop_sum_digits both of which accept a single string argument st. Both functions should return an integer representing the sum of all of the digits in the string. If there are no digits in the string the function should return 0. You are permitted to use the string method.isdigit() to check whether a given character is a digit. Constraints: • loop_sum_digits digits must use either a for loop or a while loop to the solve the problem loop_sum_digits digits must not use recursion to solve the problem rec_sum_digits • • digits must use recursion to solve the problem • rec_sum_digits must not use any kind of for or while loop to solve the problem Given the same inputs rec_sum_digits and loop_sum_digits should return the same value (given enough time and computer memory, and no maximum recursion depth) You cannot use the sum function
Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN:9780133594140
Author:James Kurose, Keith Ross
Publisher:James Kurose, Keith Ross
Chapter1: Computer Networks And The Internet
Section: Chapter Questions
Problem R1RQ: What is the difference between a host and an end system? List several different types of end...
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Transcribed Image Text:For problem A, you will be writing two different functions to iterate through a string. One function will use recursion, and the other will use a loop. Write two functions: `rec_sum_digits` and `loop_sum_digits`, both of which accept a single string argument `st`.
Both functions should **return an integer** representing the sum of all of the digits in the string. If there are no digits in the string, the function should return `0`. You are permitted to use the string method `.isdigit()` to check whether a given character is a digit.
### Constraints:
- **`loop_sum_digits`** must use either a `for` loop or a `while` loop to solve the problem.
- **`loop_sum_digits`** must not use recursion.
- **`rec_sum_digits`** must use recursion to solve the problem.
- **`rec_sum_digits`** must not use any kind of `for` or `while` loop.
- Given the same inputs, `rec_sum_digits` and `loop_sum_digits` should return the same value (given enough time and computer memory, and no maximum recursion depth).
- You cannot use the `sum` function.
### Examples:
```python
>>> rec_sum_digits("145")
10
>>> loop_sum_digits("145")
10
>>> rec_sum_digits("The Sum of 3 and 17 is 20")
13
>>> loop_sum_digits("The Sum of 3 and 17 is 20")
13
```
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