Problem
Given a string S containing both lowercase and uppercase letters, count the number of lowercase letters using recursion.
Input format
Input
input.txt
- A string S (length 1 to 50, letters only)
Output format
Output
output.txt
- The number of lowercase letters in S
Example
input
HeLLo
output
2
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Sample cases (from the problem)
Sample Case 1
Input
HeLLo
Expected output
2
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