Add Digits - LeetCode 258 - Python Solution

Solution Blog (sign into leetcode to view) - https://leetcode.com/problems/add-digits/solutions/3459015/intuitive-python-solution-solution-blog/ Base Case: if the number is one digit - return it! Otherwise keep adding the remainder of 10 of the current number, and then performing an integer division of 10. (this is a common pattern in similar problems). Once done, recursively call this function with the new result!