[removed] Display positive numbers with the plus sign

Question

How would I display positive number such as 3 as +3 and negative numbers such -5 as -5? So, as follows:

1, 2, 3 goes into +1, +2, +3

but if those are

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Answer 1

['','+'][+(num > 0)] + num

or

['','+'][Number(num > 0)] + num

It is a shorter form than the ternary operator, based on casting boolean to the number 0 or 1 and using it as an index of an array with prefixes, for a number greater than 0 the prefix '+' is used