C #: Using Hashtable to output the information that those users publish the most topics

Idea: Calculate the number of individual, the number of the most, the output details

The specific algorithm is as follows:

     Public classCount {#regionCalculate the number of entities Public StaticHashtable Entitycount (DataTable DT,stringclmnuid) {            //list<string> lst = new list<string> ();Hashtable Uidscount =NewHashtable (); foreach(DataRow rowinchdt. Rows) {stringUID =Row[clmnuid].                ToString (); if(Uidscount.contains (UID)) {Uidscount[uid]= (int) Uidscount[uid] +1; }                Else{uidscount.add (uid,1); }            }            returnUidscount; }        #endregion        #regionGet the largest number of entities Public Staticilist<string> Maxcountuid (Hashtable uidscount,BOOLListresult) {            intMaxCount =0; IList<string> UIDs =Newlist<string>(); intValue =0; foreach(DictionaryEntry kvinchUidscount) {Value= (int) kv.                Value; if(Value >MaxCount) {MaxCount=value; UIDs.                    Clear (); UIDs. ADD (KV.                Key.tostring ()); }                Else if(Value = =MaxCount) {UIDs. ADD (KV.                Key.tostring ()); }            }            returnUIDs; }         Public StaticHashtable maxcountuid (Hashtable uidscount) {intMaxCount =0; Hashtable UIDs=NewHashtable (); intValue =0; foreach(DictionaryEntry kvinchUidscount) {Value= (int) kv.                Value; if(Value >MaxCount) {MaxCount=value; UIDs.                    Clear (); UIDs. ADD (KV. Key,kv.                Value); }                Else if(Value = =MaxCount) {UIDs. ADD (KV. Key, KV.                Value); }            }            returnUIDs; }        #endregion        #regionThe ID, name, and quantity of the output user Public Static voidPrintmaxcountname (ilist<string> uids,datatable Users,stringClmnuid,stringclmnname) {             foreach(DataRow Drinchusers. Rows) {stringStruid =Dr[clmnuid].                ToString (); foreach(stringUidinchUIDs) {                    if(UID = =struid) {                        stringStrName =Dr[clmnname].                        ToString (); Console.WriteLine (Struid+":"+strName); }                }            }        }         Public Static voidPrintmaxcountname (Hashtable UIDs, DataTable users,stringClmnuid,stringclmnname) {            foreach(DataRow Drinchusers. Rows) {stringStruid =Dr[clmnuid].                ToString (); foreach(DictionaryEntry kvinchUIDs) {                    if(KV. key.tostring () = =struid) {                        stringStrName =Dr[clmnname].                        ToString (); Console.WriteLine (Struid+":"+ StrName +"("+ KV. Value.tostring () +")"); }                }            }        }        #endregion    }

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To construct the test data:

     Public classData {Private string[] Userscolumns = {"UID","name" }; Private string[] Subjectscolumns = {"title","UID"," Time" };  PublicDataTable Initusers () {DataTable users=NewDataTable (); foreach(stringColumnNameinchuserscolumns) {Users.            Columns.Add (ColumnName); }             for(inti =0; I <Ten; i++) {users. Rows.Add ("UID"+i,"name"+i); }            returnusers; }         PublicDataTable Initsujects () {DataTable Subjects=NewDataTable (); foreach(stringColumnNameinchsubjectscolumns) {subjects.            Columns.Add (ColumnName); }             for(inti =0; I <123; i++) {subjects. Rows.Add ("title"+ I,"UID"+ i%Ten," Time"+1); }            returnsubjects; }    }

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Test code:

    classProgram {Static voidMain (string[] args) {            Const stringClmnuid ="UID"; Const stringClmnname ="name"; Data Data=NewData (); DataTable Users=data.initusers (); DataTable Subjects=data.initsujects (); Hashtable Uidscount=Count.entitycount (subjects, clmnuid); Hashtable Maxcountuids=Count.maxcountuid (Uidscount);            Count.printmaxcountname (Maxcountuids,users,clmnuid,clmnname);        Console.read (); }    }

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Output Result:
UID0:NAME0 (13)

UID1:NAME1 (13)

Uid2:name2 (13)

C #: Using Hashtable to output the information that those users publish the most topics