Question

Consider the following method, which is intended to count the number of times the letter "A" appears in the string str.

Answer 1

The instruction that should replace /* missing code */ so that the method countA works as intended is (e)  str = str.substring(pos+1);

Methods

The program is an illustration of methods (or functions)

Methods are blocks of program statements that are executed when called or evoked

For the method to return the number of character A in a string, the loop body must check if the current character is A.

This is done using the substring method of a string

The syntax of this is: str.substring(pos + 1).

Where str represents the string, and pos + 1 represents the character index

Hence, the missing instruction is str = str.substring(pos+1);

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