Java - checking for string is palindrome or not.

Description

checking for string is palindrome or not.

Test cases

You can use the following test cases to verify your code logics.

ID	Input	Ouput
1	a	true
2	ab	false
3	abc	false
4	abcd	false
5	abbc	true

Code template

Cut and paste the following code snippet to start solve this problem.

public class Main {
  public static void main(String[] args) {
    System.out.println(test("a"));
    System.out.println(test("ab"));
    System.out.println(test("abc"));
    System.out.println(test("abcd"));
    System.out.println(test("abbc"));
  }

  public static boolean test(String str) {
//
  }
}

Answer

Here is the answer to the question above.

Demo

public class Main {
  public static void main(String[] args) {
    System.out.println(test("a"));
    System.out.println(test("ab"));
    System.out.println(test("ab"));
    System.out.println(test("abc"));
    System.out.println(test("abcd"));
    System.out.println(test("abbc"));
  }/*w w  w.  j  a  v a2 s .c o  m*/

  public static boolean test(String str) {
    int len = str.length();
    if (len == 1) {
      return true;
    }
    if ((len == 2) && str.charAt(0) == str.charAt(1)) {
      return true;
    }
    if (len > 2) {
      for (int i = 0; i < len / 2 - 1; i++) {
        if ((str.charAt(len / 2 - i) != str.charAt((len / 2 + i)))&& ((len / 2 + i) <= len)) {
        }
        return true;
      }
    }
    return false;
  }
}