Swap First and Last Characters

Background

Congcong is currently learning about string manipulation. He encountered an interesting task that requires swapping the first and last characters of a given string.

Problem Description

Given a string, return a new string where the first and last characters have been exchanged.

Input Format

The input consists of a single line, containing a string.

s

Output Format

The output consists of a single line, containing the new string after swapping its first and last characters.

result_s

Sample

code

"eodc"

a

"a"

ab

"ba"

Sample Explanation

• Sample 1: The input string is "code". The first character is 'c', and the last character is 'e'. After swapping, the result is "eodc".
• Sample 2: The input string is "a". There is only one character, so the first and last characters are the same. After swapping, it remains "a".
• Sample 3: The input string is "ab". The first character is 'a', and the last character is 'b'. After swapping, the result is "ba".

Constraints

Time limit: 1s, Memory limit: 1024KiB for each test case.