In an intro CS class, a TA once accused me of cheating because my code was identical or almost identical to someone else's. The assignment was to write a simple

In an intro CS class, a TA once accused me of cheating because my code was identical or almost identical to someone else's. The assignment was to write a simple Java class with only getters and setters, only a few private variables. The TA assumed me of copying the other student's code, not her copying me. How do you even prove your innocence if people are going to assume you cheated for even dumb things like that? I can definitely see how if the assignment is small and students are using the same coding style and naming conventions it can look as if students are cheating.