Building Java Programs: A Back to Basics Approach (4th Edition)
Building Java Programs: A Back to Basics Approach (4th Edition)
4th Edition
ISBN: 9780134322766
Author: Stuart Reges, Marty Stepp
Publisher: PEARSON
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Chapter 17.3, Problem 12SCP
Program Plan Intro

A method “min()”

Program plan:

  • Define the method “min()”,
    • Check whether the overall root is null.
      • If it is true, throws an exception named “IllegalStateException”.
    • Return the value obtained from making the function call on the method “min()”.
  • Define the parameterized method “min()”,
    • Check whether the left and right child of the root is null,
      • If it is true, return the value at the root.
    • Otherwise,
      • Assign the value at the root to the minimum.
      • Check whether the left child of the root is not null,
        • If it is true, assign the minimum value found from the left sub tree.
          • Check whether the right child of the root is not null,
            • If it is true, assign the minimum value found from the right sub tree.
          • Return the minimum value.

Program Plan Intro

A method “max()”

Program plan:

  • Define the method “max()”,
    • Check whether the overall root is null.
      • If it is true, throws an exception named “IllegalStateException”.
    • Return the value obtained from making the function call on the method “max()”.
  • Define the parameterized method “max()”,
    • Check whether the left and right child of the root is null,
      • If it is true, return the value at the root.
    • Otherwise,
      • Assign the value at the root to the maximum.
      • Check whether the left child of the root is not null,
        • If it is true, assign the maximum value found from the left sub tree.
          • Check whether the right child of the root is not null,
            • If it is true, assign the maximum value found from the right sub tree.
          • Return the maximum value.

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