Chapter 17, Problem 21E

Program Plan Intro

A method “matches()”

Program plan:

• Define the method “matches()”,
  • Return the value obtained from the method “matches()”.
• Define the overloaded method “matches()”,
  • Check whether the root of any one tree contains null value,
    • If it is true, return “0”.
      • Check whether the value at both root is equal,
        • If it is true, return the value obtained from the expression including the function calls “matches()”.
      • Otherwise,
        • Return value obtained from the another expression including the function calls “matches()”.