随机模拟—概率分布与随机数 ..........................\RandSumOne.m ..........................\RandSumOneTest.m ..........................\RandnPrice.m ..........................\RandnPriceTest.m ..........................\RandnPriceWithCov.m ..........................\RandnPriceWithCovTest.m ..........................\plot_pi.m ..........................\simulation_pi.m ..........................\simulation_piN.m