419. Maximum Vowels in a Substring of Length K
MediumSliding Window
Print the maximum number of vowels (a, e, i, o, u) in any substring of length k.
Input format
Line 1: s Line 2: k
Output format
The maximum vowel count.
Example 1
Input
abciiidef 3
Output
3
Example 2
Input
aeiou 2
Output
2
Constraints
1 ≤ k ≤ |s| ≤ 10⁵
Read input from standard input and print the answer to standard output. Your code is judged against 4 test cases, most of them hidden.
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