Data Structures and Algorithms in Java
Data Structures and Algorithms in Java
6th Edition
ISBN: 9781118771334
Author: Michael T. Goodrich
Publisher: WILEY
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Chapter 3, Problem 4R

The TicTacToe class of Code Fragments 3.9 and 3.10 has a flaw, in that it allows a player to place a mark even after the game has already been won by someone. Modify the class so that the putMark method throws an IllegalStateException in that case.

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