It should be noted that in the detail, m > 2.

Thank you for your attention.I also had this issue.

This fails with gap(2, 2, 6), should be null and returns [0,2].
Also @lindaxiao-hust said also fails with gap(3, 3, 4) should be null and returns [0,3]

beautiful, elegant and performant. My sol is straight up embarassing.

awesome!

No need to go through the whole range [m, n] either, since after 2 only odd numbers can be prime.

Aaaaaa thanks a lot for the explanation!

For better performance.
To check if 25 is prime or not, you only have to check if 25 can be divided by 2,3,4,5. 5 (is sqrt(25)).

Beautiful

It means your function is printing the result instead of returning it.

Test Results:
Log
foo1
None should equal 'foo1'
what does this error mean since the results was foo1

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