Title: The value of S=A+AA+AAA+AAAA+AA...A, where a is a number. For example 2+22+222+2222+22222 (there are 5 numbers added at this time), several numbers are added with keyboard control.

Title: The value of S=A+AA+AAA+AAAA+AA...A, where a is a number. For example 2+22+222+2222+22222 (there are 5 numbers added at this time), several numbers are added with keyboard control.

Method One:

 Packageday11_2;ImportJava.util.Scanner;ImportJava.util.function.IntConsumer; Public classlianxi08{ Public Static voidMain (string[] args) {Scanner in=NewScanner (system.in); System.out.println ("Please enter the value of number A to be calculated:"); intA=In.nextint (); System.out.println ("Please enter the value of number n:"); intn=In.nextint (); intI=0; intB=0; intSum=0;  while(i<N) {b=a+b;//the value of each itemSum=sum+b;//and thea=a*10;//i++;//Frequency Control} System.out.println ("Result is" +sum); }}

Method Two:

1  Packageday11_2;2 ImportJava.util.Scanner;3  Public classLianxi08_1 {4      Public Static voidMain (string[] args) {5Scanner s =NewScanner (system.in);6         intn = s.nextint ();//Addend7         intm = S.nextint ();//Number of Additions8         intsum = 0;//and the9          for(inti = 0; I < m; i++){Tensum+=n*f (i); One         } A System.out.println (sum); -     } -      Public Static DoubleFintm) { the         if(m==0)return1; -         returnMath.pow (Ten, M) + f (--m); -     } -}

Title: The value of S=A+AA+AAA+AAAA+AA...A, where a is a number. For example 2+22+222+2222+22222 (there are 5 numbers added at this time), several numbers are added with keyboard control.