The value of S=A+AA+AAA+AAAA+AA...A, where a is a number. For example 2+22+222+2222+22222 (a total of 5 numbers are added at this time), several numbers are added by the user control.

 PackageLianxi;ImportJava.util.*; Public classDiejia { Public Static voidMain (string[] args) {System.out.println ("Please enter a cardinality:"); Scanner Jishu=NewScanner (system.in); intA =Jishu.nextint (); System.out.println ("Please enter the number of added numbers:"); Scanner Geshu=NewScanner (system.in); intb =Geshu.nextint (); intsum = 0; String C= "";  for(intj = 0; J < b; J + +)        {            //A to String typec = C +string.valueof (a); //Show cardinality increment changeSystem.out.println (c); //reverses the string type to int and sumssum = sum +NewInteger (c); } System.out.print ("Calculation result is" +sum); }}

The

evaluates the value of S=A+AA+AAA+AAAA+AA...A, where a is a number. For example 2+22+222+2222+22222 (a total of 5 numbers are added at this time), several numbers are added by the user control.