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edited Jan 30, 2017 at 19:46

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Perl 6Perl 6, 25 bytes

{[le] .comb or[ge] .comb}

How it works:

.comb splits the input into a sequence of characters.

le and ge are the "less or equal" and "greater or equal" string comparison operators.

[ ] around an infix operator, reduces ("folds") the argument list with that operator. (It's smart enough to return True if the input has only zero or one characters.)

or returns True if the expressions on either side of it is true.

Perl 6, 25 bytes

{[le] .comb or[ge] .comb}

Perl 6, 25 bytes

{[le] .comb or[ge] .comb}

How it works:

.comb splits the input into a sequence of characters.

le and ge are the "less or equal" and "greater or equal" string comparison operators.

[ ] around an infix operator, reduces ("folds") the argument list with that operator. (It's smart enough to return True if the input has only zero or one characters.)

or returns True if the expressions on either side of it is true.

answered Jan 30, 2017 at 19:09

4.5k
16
19

Perl 6, 25 bytes

{[le] .comb or[ge] .comb}