Problem
Given a string, swap its first and last characters and print the result. If the string has length 1, print it unchanged.
Input format
Input
input.txt
- A string (up to 100 characters)
Output format
Output
output.txt
- The updated string after swapping
Example
input
hello
output
oellh
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Sample cases (from the problem)
Sample Case 1
Input
hello
Expected output
oellh
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