coreJava 写的在考试系统，有登陆，选题，答题，时间记录，计算得分-coreJava write the examination system, landing, topics, answer questions, time records, calculate score

Colt是一个高性能的数学库，由以下几个子库构成： Colt库:基本的动态数组、稀疏矩阵、线性代数。 Jet库：数理统计、直方图。 CoreJava库：类printf的打印函数，并行计算。(Colt is a high performance math library composed of the following sub libraries: Colt libraries: basic dynamic arrays, sparse matrices, linear algebra.