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1456. Maximum Number of Vowels in a Substring of Given Length

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	`1`	`+class Solution {`
	`2`	`+ fun maxVowels(s: String, k: Int): Int {`
	`3`	`+ val vowels = setOf('a', 'e', 'i', 'o', 'u')`
	`4`	`+ var maxCount = 0`
	`5`	`+ var windowVowels = 0`
	`6`	`+`
	`7`	`+ for (i in s.indices) {`
	`8`	`+ if (i >= k) {`
	`9`	`+ if (s[i - k] in vowels) {`
	`10`	`+ windowVowels--`
	`11`	`+ }`
	`12`	`+ }`
	`13`	`+ if (s[i] in vowels) {`
	`14`	`+ windowVowels++`
	`15`	`+ }`
	`16`	`+ maxCount = maxOf(maxCount, windowVowels)`
	`17`	`+ }`
	`18`	`+ return maxCount`
	`19`	`+ }`
	`20`	`+ fun maxVowels1(s: String, k: Int): Int {`
	`21`	`+ val vowels = setOf('a', 'e', 'i', 'o', 'u')`
	`22`	`+ val length = s.length`
	`23`	`+ if (k > length) return 0`
	`24`	`+ var maxCount = 0`
	`25`	`+ for(i in 0..(length-k)){`
	`26`	`+ val subString = s.substring(i, i+k)`
	`27`	`+ val vowelsCount = subString.count{it in vowels}`
	`28`	`+ maxCount = maxOf(maxCount, vowelsCount)`
	`29`	`+ }`
	`30`	`+ return maxCount`
	`31`	`+ }`
	`32`	`+}`

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