Java:

• method name should be camelCase, not PascalCase

Refer here on how to enable backward compatability to not invalidate all solutions

fixed first point, second point is addressed in other issue

All languages:

• The output can be easily hard-coded since for each n, there is only 1 valid upper / lower triangular matrix. Hence, the input range should be increased (Also, it should cover range from 1 - 3)

Python:

• it block is missing in random tests

• Such solutions should be invalidated by hardening random tests

python translation with:

• new test framework

Empty product is unambiguously mathematically defined, and it is tested in other languages.

Shall we follow camel-case Java naming conventions here?

DiagonalProduct.[r]eturnProduct()

thanks!

Approved.

Lowered the range of the input values to result in the MAX_SAFE_INTEGER range.

Approved.

Carefully crafted input values :) Approved (after forking because of merge conflict)

Description does not specify the empty product, thus I would not test it here.

TypeScript translation based on existing JavaScript