C # Inner classes use interface IComparer to implement sorting

usingSystem;usingSystem.Collections.Generic;usingSystem.Linq;usingSystem.Text;usingSystem.Threading.Tasks;namespaceThe inner class uses the interface to implement the sort {classPerson {Private string_name; Private int_age;  PublicPerson (stringNameintAge ) {_name=name; _age=Age ; }         Public stringName {Get{return_name;} }         Public intAge {Get{return_age;} }        Private StaticAgecomparer _agecom =NULL;//is only a static variable.          Public StaticIcomparer<person>agecom {Get            {                if(_agecom = =NULL)//when a static property is accessed for the first time, an object is created automatically. {_agecom=NewAgecomparer (); }                return_agecom; }        }        Private classAgecomparer:icomparer<person>        {            intIcomparer<person>. Compare (person x, person y) {returnX._age.compareto (y._age); }        }    }    classProgram {Static voidMain (string[] args) {person[] P1=Newperson[5]; p1[0] =NewPerson ("Wang Liang", -); p1[1] =NewPerson ("Zhang Mingmin", +); p1[2] =NewPerson ("Sun Xiaofeng", -); p1[3] =NewPerson ("Hermione", -); p1[4] =NewPerson ("Liu Mingchuan", at); foreach(Person Pinchp1) {Console.WriteLine (P.name+" "+p.age.tostring ()); } Console.WriteLine ("The age is sorted and the results are printed:");            Array.Sort (P1, person.agecom); foreach(Person Pinchp1) {Console.WriteLine (P.name+" "+p.age.tostring ());        } console.readkey (); }    }}

C # Inner classes use interface IComparer to implement sorting