Java Program to check Number Divisibility Using Vedic Maths

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Program to find divisibility using vedic maths

public class Controller {

    public static boolean case2(int number,int divisible){
        boolean flag= false;
        if(number%10 == 0 || number%10 == 2 ||number%10 == 4 ||number%10 == 6 ||number%10 == 8){
            System.out.println("Yes "+number+" is divisible by "+divisible);
            flag = true;
        }
        else{
            System.out.println("no "+number+" is not divisible by "+divisible);
        }
   
        return flag;   
    }
   
    public static boolean case3(int number,int divisible){
        boolean flag= false;
        int sum = 0;
        int remander = 0;
        int temp = number;
        while(temp!=0){
            remander = temp%10;
            temp = temp/10;
            sum+=remander;
        }
       
        if(sum%3==0){
            System.out.println("Yes "+number+" is divisible by "+divisible);
            flag = true;
        }
        else{
            System.out.println("no "+number+" is not divisible by "+divisible);
        }
       
        return flag;
    }
   
    public static void case4(int number,int divisible){
        double sum2 = (double)number/100;
        String floatToString = Double.toString(sum2);
        int lastValue = Integer.parseInt(floatToString.substring(floatToString.indexOf(".")+1));
        if(lastValue%4==0)
            System.out.println("Yes "+number+" is divisible by "+divisible);
        else
            System.out.println("no "+number+" is not divisible by "+divisible);
    }
   
    public static void case5(int number,int divisible){
        if(number%10 == 0 || number%10 == 5)
            System.out.println("Yes "+number+" is divisible by "+divisible);
        else
            System.out.println("no "+number+" is not divisible by "+divisible);
    }
   
    public static void case6(int number,int divisible){
        boolean status = case2(number,2);
        if(status){
            boolean status2 = case3(number,3);
           
            if(status2)
                System.out.println("Yes so "+number+" is divisible by "+divisible);
            else
                System.out.println("no "+number+" is not divisible by "+divisible);
        }else{
            System.out.println("no "+number+" is not divisible by "+divisible);
        }
    }
   
    public static void case7(int number,int divisible){
        int remander = 0;
        int tempNum = number;
       
        if((tempNum+"").length()>2){
            while(tempNum!=0){
                remander = tempNum%10;
                int sum = remander*2;
                tempNum = tempNum/10;
                tempNum = tempNum-sum;
               
                if((tempNum+"").length() == 2)
                    break;
            }
        }
       
        if(tempNum%7 ==0)
            System.out.println("Yes "+number+" is divisible by "+divisible);
        else
            System.out.println("no "+number+" is not divisible by "+divisible);
       
    }
   
    public static void case8(int number,int divisible){
        double sum2 = (double)number/1000;
        String floatToString = Double.toString(sum2);
        int lastValue = Integer.parseInt(floatToString.substring(floatToString.indexOf(".")+1));
        if(lastValue%8==0)
            System.out.println("Yes "+number+" is divisible by "+divisible);
        else
            System.out.println("no "+number+" is not divisible by "+divisible);
    }
   
    public static void case9(int number,int divisible){
       
        int sum = 0;
        int remander = 0;
        int temp = number;
        while(temp!=0){
            remander = temp%10;
            temp = temp/10;
            sum+=remander;
        }
       
        if(sum%9==0){
            System.out.println("Yes "+number+" is divisible by "+divisible);
        }
        else{
            System.out.println("no "+number+" is not divisible by "+divisible);
        }
       
    }
   
    public static void case11(int number,int divisible){
       
        String conversion = String.valueOf(number);
       
        int length = (number+"").length();
        int conversionArr[] = new int[length];
        int count = 0;
       
        while(count<length){
            conversionArr[count] = Character.getNumericValue(conversion.charAt(count));
            count++;
        }
       
        int odd = 0,even = 0;
       
        for(int i=0;i<conversionArr.length;i++){
           
            if(i%2==0){
                even+= conversionArr[i];
            }else{
                odd+= conversionArr[i];
            }
        }
       
        int sub = even - odd;
       
        if(sub==0 || sub%11==0)
            System.out.println("Yes "+number+" is divisible by "+divisible);
        else
            System.out.println("no "+number+" is not divisible by "+divisible);
       
    }
   
    public static void main(String[] args) {
       
        System.out.println("Enter the number:- ");
        Scanner sc = new Scanner(System.in);
        int number = sc.nextInt();
       
        System.out.println("Enter divisible by number( only 2 to 9 and 11 are allow):-");
        int divisible = sc.nextInt();
       
        switch(divisible){
       
        case 2:    case2(number,divisible);
                break;
        case 3: case3(number,divisible);
                break;
        case 4: case4(number,divisible);
                break;
        case 5:    case5(number,divisible);
                break;
        case 6: case6(number,divisible);
                break;
        case 7: case7(number,divisible);
                break;
        case 8: case8(number,divisible);
                break;
        case 9: case9(number,divisible);
                break;
        case 11: case11(number,divisible);
                break;
        default:    System.out.println("you have entered wrong choice");
       
        }
       
    }

}