I used print instead of return,it solved.just use return :) <3

it's buggy,my output is same as the answer but it shows faild
even I changed type of output to list or string,it steel feedback an faild

Merged

This fork should fixes the issue.

The random tests in Lua have multiple missing and repeated numbers.

First of all, reading unformatted code is really difficult. You really need to use code formatting when showing solution.

The next thing is, your problem is when missing num is 100. Try this assertion and see:

test.assert_equals(missing_no(list(range(100))), 100)

It is difficult to find problems in your solution without knowing what your solution is.

If the solution I see is your most recent one, it seems that indeed, it does not handle the case when the missing number is 100. I think you did some mistake when checking what input fails.

Anyway, your solution is buggy, it is not a kata issue.

could you check the mix test solution , i have gotten the test passed but it also says 'none should == 100'(the answer was correct(28)and 100 was not absent i check manually)

done

Lua translation !

Perhaps I thought the range of answers would be 1 to 100 inclusive. I can't exactly remember. Thanks.

Can you advise which language doesn't uses the 0 to 100 inclusive range?

"0 to 100 inclusively" => "1 to 100 inclusively"