How to convert ASCII value for character to character

Hello,

I know about the cast function. However, I’m trying to figure out how to go from the ASCII value to a character. Something like Python’s chr function:

Python 2.7.6 (default, Mar 22 2014, 22:59:56) 

[GCC 4.8.2] on linux2

Type “help”, “copyright”, “credits” or “license” for more information.

>>> chr(97)

‘a’

>>> chr(98)

‘b’

>>> chr(110)

‘n’

>>> chr(120)

‘x’

>>> 

How can I accomplish this?

q)`char$97 98 110 120

“abnx”

Thank you!