Sum of two numbers, the numbers in the array are converted to decimal, added, and output inversely

public class  Sum of two numbers  {
    
    public static void main(String[] args) {
    
         Sum of two numbers  t=new  Sum of two numbers ();
        System.out.println(" Enter the first array , Whitespace separated ");
        int arr1[]=t.arr();
        int sum1=0;
        int sum2=0;
        for(int i=0;i<arr1.length;i++){
    
            sum1 = sum1+(int) (arr1[i]*(Math.pow(10,arr1.length-(i+1))));
        }
        System.out.println(" Enter the second array , Whitespace separated ");
        int arr2[]=t.arr();
        for ( int i=0;i<arr2.length;i++){
    
            sum2 = sum2+(int) (arr2[i]*(Math.pow(10,arr1.length-(i+1))));
        }
        int sum=sum1+sum2;
        String ssum=String.valueOf(sum);
        String sumarry[] = ssum.split("");
        for(int i=0;i<sumarry.length;i++){
    
            if(i==sumarry.length-(i+1)) break; // Odd critical condition 
            if(i>sumarry.length-(i+1)) break; // Even critical condition 
            String c=sumarry[sumarry.length-(i+1)];
            sumarry[sumarry.length-(i+1)] =sumarry[i];
            sumarry[i]=c;
        }
        for (String a:sumarry){
    
            System.out.print(a);
        }
    }
    public int[] arr (){
    
        Scanner sc = new Scanner(System.in);
        String inputString = sc.nextLine();
        String stringArray[] = inputString.split(" ");
        int intarr[]=new int[stringArray.length];
        for (int i=0;i<stringArray.length;i++){
    
            intarr[i]=Integer.parseInt(stringArray[i]);
        }
        return intarr;
    }
}

Example ：
Similar to the second question of Li Kou , But there is no linked list here .