Dividing Without Divide

June 25, 2019

Today’s task comes from a student programmer:

Given a numerator and divisor of unsigned integers, compute the quotient and remainder. You cannot use divide, cannot use mod, and you want to optimize for speed.

After a while, the student programmer looked up the official solution:

def divide_problem(num, div):
    quotient = 1
    while num - (quotient * div) >= div:
        print(num - (quotient * div), "loop")
        quotient += 1
    remainder = num - (quotient * div)
    return quotient, remainder

Your task is to comment on the official solution and write a better one. When you are finished, you are welcome to read or run a suggested solution, or to post your own solution or discuss the exercise in the comments below.


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