摘要：
The basic idea of is as follows:Maintain a dequeoperandsfor the numbers and another dequeoperationsfor the operators+, -, *,/`.Scan the expression fro... 阅读全文
摘要：
This problem can be solved elegantly using dynamic programming.We maintain two arrays:cnt[i][j] --- number of parentheses needed to add within s[i..j]... 阅读全文