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package ch06;
class P1_2 {
public boolean isPalindrome(String s) {
// 정규식으로 유효한 문자만 추출한 다음 모두 소문자로 변경
String s_filtered = s.replaceAll("[^A-Za-z0-9]", "").toLowerCase();
// 문자열을 뒤집은 다음 String으로 변경
String s_reversed = new StringBuilder(s_filtered).reverse().toString();
// 두 문자열이 동일한지 비교
return s_filtered.equals(s_reversed);
}
}
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