public static boolean isPalindrome(String inputString) {
StringBuilder sb = new StringBuilder();
for (Character c: inputString.toCharArray()) {
if (Character.isLetter(c)) {
sb.append(c);
}
}
String forward = sb.toString().toLowerCase();
String backward = sb.reverse().toString().toLowerCase();
return forward.equals(backward);
}
Palindrome
Check if a string is a palindrome
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