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[Week2](gmlwls96) Valid-anagram
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valid-anagram/gmlwls96.kt

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class Solution {
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// 시간 복잡도 : O(nlog(n))
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fun isAnagram(s: String, t: String): Boolean {
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val sortS = s.toCharArray().apply { sort() } // string을 char array로 변환 후 정렬.
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val sortT = t.toCharArray().apply { sort() }
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return sortS.concatToString() == sortT.concatToString() // 정렬된 char array를 string으로 만든후 비교.
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}
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}

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