Problem
Given a string S containing words separated by single spaces (no leading/trailing spaces), print the words in reverse order using recursion.
Input format
Input
input.txt
- A string S (length 1 to 100, only lowercase letters and spaces)
Output format
Output
output.txt
- Words printed in reverse order, separated by a single space
Example
input
the sky is blue
output
blue is sky the
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Sample cases (from the problem)
Sample Case 1
Input
the sky is blue
Expected output
blue is sky the
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