Question

Help! in Java, test values {0, 1, 3, 6, 10} I need this to print 107 but it keeps printing 75. What am I doing wrong???

    public int switchCase( int []values) {
       int sum = 0;
       for(int i = 0;i<values.length;i++){
           sum += values[i];
              }
          
           int value = values.length;
           switch (sum){
              case 1:
                  sum += value + 0;
                  break;
              case 2:
              case 3:
              case 4:
                  sum += value + 1;
                  break;
              case 5:
              case 6:
              case 7:
                  sum += value + value;
                  break;
           default:
               sum += value + value*10;
               break;
              }

               return sum;
       }

Answer 1

ANSWER: In your code as we know that the sum of the array elements is 20 and in the switch case you are sending sum as switch(sum) therefore case 20 should be there in the switch case but there is no case 20 so it is going in to the default statement where sum+= value+ value*10 and we know value =5 , so sum = 20 + 5+ 5*10 => 75 that's why it is printing the value 75.

And if you want to print 107 then you have to change the logic and you can change by two ways :1st you can add case 20 so that it can go into it and write logic for 107 as  I given below:

CODE:

public class Demo {
   public static int switchCase( int []values) {
   int sum = 0;
   for(int i = 0;i<values.length;i++){
   sum += values[i];
   }
  
   int value = values.length;
   switch (sum){
   case 1:
   sum += value + 0;
   break;
   case 2:
   case 3:
   case 4:
   sum += value + 1;
   break;
   case 5:
   case 6:
   case 7:
   sum += value + value;
   break;
   case 20:
       sum+= value+ 82;
       break;
   default:
   sum += value + value*10;
   break;
   }

   return sum;
   }
   public static void main (String[] args)
   {   
       int [] values = {0, 1, 3, 6, 10};
       System.out.println(switchCase(values));
   }
   }

OUTPUT:

107

or you can change the logic in to the default statement so that you can get 107.