You need to construct a string consists of parenthesis and integers from a binary tree with the preorder traversing way. The null node needs to be represented by empty parenthesis pair "()". And you ...

For a web developer, it is very important to know how to design a web page's size. So, given a specific rectangular web page’s area, your job by now is to design a rectangular web page, whose length L ...

Abstract: Java 1.5 introduces several new features that offer significant improvements over older Java technology. In this paper we consider the new enum construct, which provides language support for ...