摘要：usingSystem;usingSystem.Collections.Generic;usingSystem.Linq;usingSystem.Text;usingSystem.IO;usingSystem.Collections;usingSystem.Text.RegularExpressions;namespacerandom{classProgram{//求随机数平均值方法staticdoubleAve(double[]a){doublesum=0;foreach(doubledina){sum=sum+d;}doubleave=sum/a.Length;returnave;}//求 阅读全文

摘要：Func,double>variance=numbers=>(fromninnumbersselectMath.Pow((n-numbers.Sum()/numbers.Count),2)).Sum()/numbers.Count;Console.Write(variance(newList{1,2,5,6})); 阅读全文