发布时间：2013-01-10 22:34:43

       明天晚上期末考试就结束了，已经不想看书了，先来计划一下寒假的学习计划。已经是大三了，估计这就是我的倒数第二个寒假了。       花了近1000块买了一些英文原版书，大概算算，在大学里我买书已经花了6000左右了吧。我属于买书的时候花钱不眨眼类型的，看书也基本上是只看经典。以下是我的寒假计划:       1.继续看apue。由于要准备期末考试，apue看了一半就停下了。回家后继续看。       2.《tcp/ip详解》......【阅读全文】

发布时间：2013-01-03 20:32:06

Problem description:Please list all of the subsets of a known set including the empty set.My idea: one thinking of the algorithm backtracking is to generate a tree of subset and the condition of an element in the super set for a subset is either on or off.Hence we can specialize the subset tree to a......【阅读全文】

发布时间：2013-01-03 20:27:09

       问题描述:列出一个集合的所有子集，包括空子集合。       我的思路:回溯法的一种思路就是生成一颗子集树，而一个集合中的元素，要么存在于子集中，要么不存在，所以这又特殊化成一颗二叉树了。每当到达二叉树的底端时，就打印一次。很容易写出如下的代码:#include <stdio.h> #define MAX 1000  int n=3; //the number of the set elements int set[MAX]={1,2,3};&nb......【阅读全文】

发布时间：2013-01-03 16:04:07

Problem description:When we calculate for prime numbers with a sieve method,we delete so many numbers which is not necessary repeatly.For instance,there is a number which consists of 3x7x17x23,and we delete it when we delete the multiples of 3 as we delete the same number when we delete the multiple......【阅读全文】

发布时间：2013-01-03 12:03:54

Problem description:Calculate the prime numbers with a sieve method.There is a magical sieve that can remove all the multiple of the number i.Please calculate the prime numbers at a range from 2 to N by this way.There is a requirement that you should not use multiplication and division.You can ......【阅读全文】