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Data Structure Using Java





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(A) Implement generic class ArrayStack as discussed in the lectures having following

methods:


constructor, push, pop, peek, isEmpty, copy constructor, reallocate (private method).

Also add following methods to this class:


size: returns number of elements in the stack.

contains: Search an element in the stack. If found returns true, else returns false.

clear: Deletes all elements of the stack and make it empty stack.


(B) Implement generic class ArrayQueue as discussed in the lectures having following methods:


constructor, copy constructor, offer, poll, peek, isEmpty, reallocate(private), iterator.

Inner class Iter that implements interface Iterator having methods: constructor,

hasNext, next.


Also add following methods to the ArrayQueue class:

size: returns number of elements in the queue.

contains: Search an element in the stack. If found returns true, else returns false.

clear: Deletes all elements of the stack and make it empty stack.


(C) Write a class called PalindromeChecker having method isPalindrome having a parameter line of type String. The method changes each uppercase letter of line to lowercase, and places each letter of the String line in a queue and also onto a stack. The program should then verify whether the line of text is a palindrome. Include method main to check several Strings, whether each one is a palindrome or not.



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