An important skill in software engineering is reading the requirements thoroughly.

It doesn't filter negative values; if we have -10 and -5 as inputs, this function would return 49.

I prefer to filter out by invalid values n,m. Then there is no unneeded multiplication happening

No, but return value is integer anyway, so there is no possible way to return correct value using integer. We can return 0 in this case, because input data will be kind of incorrect, but I don't think it's a good way to solve the task.

Description says: "Input will always be a non-negative integer.", so we can omit handling this case

What about negative values? For example n = -5, m = -4. I think it should return 0. Your solution will give 19.

Will this solution work if (n * m - 1) > Integer.MAX_VALUE?

Nice solutions!!!

Why compute breaks, if you can simply check n & m ?

haha nice one

This is really clever, I never thought of using the max method to filter out the negative values.

The test for the Java fails passing solutions because the test is static

but it's handy for assignment

the return statement isn't required.