Introduction - If you have any usage issues, please Google them yourself
Set single linked list storage n characters, design algorithm determines whether the string centrosymmetric relationship. In example: xyzzyx, xyzyx be considered the centrosymmetric string. 2, the design algorithm to determine an arithmetic expression in parentheses is paired. (Hint: scan the expression, in case ' (' into the stack, in case ' )' drained away the top of the stack ' (' expression is scanning is completed, the stack is empty), assumed to take the lead in the circular linked list nodes queue, and allowed only a pointer to the tail, the preparation of the home team empty, enqueue and dequeue algorithm.