two good friend try new programming language call PersescriptThe important language string a string Persescript character so example hello string but Hello variable keyword consider problemPersescript functionbase so operator language for example sum number write sumab abThere function work string these include concatxy function get string x y put y end x return result for example concathelloworld return HelloWorld reversex get single string x reverse for example reversehello return olleH substrxab get string x integer b 1abn n length x and return substre x index b inclusive for example substrHello24 return ell substrxabc version substr work like c step add c positive for example substrhelloworld1102 return Hlool this substr mean ath character cth character reach bYoure go manipulate string Persescript give string expression print result it guarantee expression contain string show character functionscommand Persescript caseinsensitive so substr function write SUBsTr but can not print result hello instead print HelloSee sample information