If the statement a.substring(1, a.length( ) - 1) were changed to be (a.substring(1, a.length( )), then the method would
A) have infinite recursion unless the String were null
B) always return True
C) always return false
D) return True only if all characters of the String were the same
E) return True only the String had only two characters and they were the same

Question

Quizplus · Accepted Answer

D) The original method recursively calls itself with a substring equal to the String minus the first and last characters. This new version would recursively call itself with a substring equal to the String minus the first character. The method would return True if the first character of the String (or substring) equaled the last character. Since the substring for each recursive call is the same as the previous String less the first character, it winds up comparing each character in the String to the last in the String and returning True only if each character of the String equals the last character. This means all of the characters are the same.

If the Statement A