package cse1030;

public class StringUtils {

  public static String reverse(String s) {
    // the easy way; delegate to StringBuilder
    StringBuilder b = new StringBuilder(s);
    return b.reverse().toString();
  }
  
  public static String reverse2(String s) {
    // the hard way; write the loop yourself
    char[] rev = new char[s.length()];
    for (int i = 0; i < s.length(); i++) {
      int j = s.length() - i - 1;
      rev[j] = s.charAt(i);
    }
    return new String(rev);
  }
  
  public static boolean isPalindrome(String s) {
    return s.equals(StringUtils.reverse(s));
  }
  
  public static boolean isPalindrome2(String s) {
    return s.equals(StringUtils.reverse2(s));
  }
}