皇后问题快速算法

最小二乘一次完成算法，C语言编写，源码，调试通过。-A complete least-squares algorithm, C language, source code, debugging through.

A program to demonstrate the optimization process of particle swarm optimization. A two-dimensional objective function is visualized by level of grey: the lighter the color, the higher the function value. The particles are shown as red circles, their trajectory as red lines.-A program to demonstrate the optimization process of particle swarm optimization. A two- dimensional objective function is visualized by level of gray : the lighter the color, the higher the value function. The particles ar e shown as red circles. their trajectory as red lines.

矩阵的广义逆计算，共两种方法，其中迭代法有一阶收敛和二阶收敛-generalized inverse matrix calculation, a total of the two methods, which iteration is a second-order convergence and convergence

二维矩阵方面的库- Two-dimensional matrix aspect storehouse

mathematic

在许多情况下我们需要穷举组合的算法，比如密码词典。这个算法的关键是密码下标进位的问题。另外本例子中的写文件语句效率比较低，为了降低算法复杂度没有优化。如果要提高写文件的效率，可以使用缓冲区，分批写入。-in many cases we need exhaustive combination of algorithms such as password dictionary. The algorithm is the key indices into password-issue. Another example of this document written statement low efficiency, in order to reduce the complexity of the algorithm has not been optimized. If the document was to improve the efficiency, the use of buffer zones, into batches.

一种新的受限扩散凝聚模型--单向扩散凝聚模型DLUA，输入不同的参数可产生各种不同的图案，可作为辅助研究或教学演示。-a new pool of restricted diffusion model-- the proliferation of one-way model DLUA rally, importation of different parameters can produce a variety of designs, as a complementary research or teaching demonstration.

常用、经典算法及讲解-commonly used, and on the classical algorithm

本算法是一个关于kruskal的源码实现,可供大家学习研究.-This algorithm is a source about the implementation kruskal for U.S. study.

计算两个日期间的天数差-calculate the day interval between two datetime value