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palindrome is a string that reads the same forwards as backwards. Using only a xed number of stacks, and a xed number of int and char variables, write an algorithm to determine if a string is a palindrome. Assume that the string is read from standard input one character at a time. The algorithm should output true or false as appropriate

Sagot :

Solution :

check_palindrome[tex]$(string)$[/tex]

   lower_[tex]$case$[/tex]_string[tex]$=$[/tex] string[tex]$. to$[/tex]_lower()

   Let stack = new Stack()

   Let queue = new Queue();

   for each character c in lower_case_string:

       stack.push(c);

       queue.enqueue(c);

   let isPalindrome = true;

   while queue is not empty {

       if (queue.remove().equals(stack.pop())) {

           continue;

       } else {

           isPalindrome=false;

           break while loop;

       }

   }

   return isPalindrome

Input = aabb

output = true

input =abcd

output = false

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