strings.java

/*Is palindorme*/

public boolean isPalindrome(String s) {
    char[] = s.toCharArray();
    for (int i = 0, j = c.length - 1; i< j;) {
        if (!Character.isLetterOrDigit(c[i])) i++;
        else if (!Character.isLetterOrDigit(c[i])) j--;
        else if(Character.toLowerCase(c[i++]) != Character.toLowerCase(c[j--]))
            return false;
    }
    return True;
}

/*
isAnagrams
*/

public boolean isAnagram(String s, String t) {
    int[] alphabet = new int[26]
    for (int i = 0; i < s.length(); i++)
        alphabet[s.charAt(i) - 'a']++;
    for (int i = 0; i < t.length()l i++)
        alphabet[t.charAt(i) - 'a']--;
    for (int i : alphabet)
        if (i != 0) return false;
    return true;
}