Question

In which of the following cases is the reversal of a string not equal to the original string?

(a) Palindromic strings

(b) Strings of length 1

(c) Empty String

(d) Strings of length 2

The question was posed to me in unit test.

This interesting question is from String Reversal using Recursion in portion Recursion of Data Structures & Algorithms II

Answer 1

Right choice is (d) Strings of length 2

Best explanation: String “ab” is a string of length 2 whose reversal is not the same as the given one. Palindromic Strings, String of length 1 and Empty Strings case – the reversal is the same as the one given.