Problem
Given a string S containing lowercase letters and spaces (no leading or trailing spaces, single spaces only), count the number of words using recursion.
Input format
Input
input.txt
- A string S (length 1 to 100, only lowercase letters and spaces)
Output format
Output
output.txt
- The number of words in S
Example
input
hello world again
output
3
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Sample cases (from the problem)
Sample Case 1
Input
hello world again
Expected output
3
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