Question: there is a function called examine ( ) . It returns a string representing the contents of the buffer, enclosed in the square brace characters.

there is a function called examine(). It returns
a string representing the contents of the buffer, enclosed in the square brace characters. Represent unused elements
with
-. Note: when you remove an element from the buffer, IT INCORRECT TO REPLACE THAT
CHARACTER WITH A -. DO NOT change the element in the buffer; just advance the tail index/pointer.

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