A palindrome is a word or phrase that reads the same forward and backward, ignoring blanks and considering uppercase and lowercase versions of the same letter to be equal. For example, the following are palindromes:
- warts n straw
- radar
- Able was I ere I saw Elba
- tacocat
Write a
/**
Precondition: The array a contains letters and blanks in position a[0] through a[used - 1]. Returns true if the string is a palindrome and false otherwise.
*/
public static boolean isPalindrome (char[] a, int used)
Your program should read the input characters into an array whose base type is char and then call the preceding method. The int variable used keeps track of how much of the array is used, as deserted in the section entitled “Partially Filled Arrays.”
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