One of the unexpected benefits of free coding daily is the chance to explore solutions to problems you have to work on that day. When you write code freely without considering the use of it there is less pressure to keep a poor implementation. It’s practice that is a way to boost your understanding of the problem before writing it for real.
There are some definite benefits to writing a solution to a problem more than once. With each iteration you get faster and produce a better solution. When you practice and try to learn from each attempt you get better. You gain mastery.