title: Circle Alphabet
body: <p>Circle Alphabet
  Enter letter A &amp; number N , printed letters are often preceded by A N units (note: the letters arranged in a circle, so the case of the input letters is 'z' and N = 1, response project is 'a')
  Input b 1 Output c</p>
  
  <pre><code>import java.util.Scanner;
  
  class UnsolvedProblem {
      public static void tinh(String ch, int numb) {
          String[] str = { "a", "b", "c", "d", "e", "f", "g", "h", "i", "j", "k", "l", "m", "n", "o", "p", "q", "r", "s",
                  "t", "u", "v", "w", "x", "y", "z" };
          for (int i = 0; i &lt; str.length; i++) {
              if (ch.equals(str[i]))
                  System.out.print(str[i + numb] + " ");
          }
      }
  
      public static void main(String[] args) {
          Scanner sc = new Scanner(System.in);
          String ch = sc.next();
          int numb = sc.nextInt();
          tinh(ch, numb);
      }
  }
  </code></pre>
  
  <p>How to do it with letter z and number 1 it should return letter a</p>