Strings

$9.$ Print the length of the string below.

$10.$ Print the first 'word' in the string using negative indexing. $($Print RRC$)$

$11.$ "Slice" the string and display "Polytech".

$12.$ Use the concept of "Stride" and display "Polytech" backwards. $($Print "hcetyloP"$)$

$13.$ Change the string into uppercase.$$

$14.$ Replace "Polytech" with "Polytechnic". $($Note: use replace function$)$