Java Loops and Introduction to Arrays - Basic Calculator

Q12-Calculators are widely used devices nowadays. It makes calculations easier and faster. A simple calculator consists of the following operators:
1. '+': adding two numbers
2. '- ': subtraction
3. '*': multiplying numbers
4. '/': division
You will be given operator '+' or '- ' or '*' or '/' followed by two operands(integers), you need to perform a mathematical operation based on a given operator.
If '/' operator is used, return the integer value after division
Ans-static int calculator(char ch, int a, int b){
    int result=0;
         // your code here
         switch(ch) {
             case '+':{
                 result = a+b;
                 break;
            }
             case '-':{
                 result = a-b;
                 break;
            }
             case '*':{
                 result = a*b;
                 break;
            }
             case '/':{
                 result = a/b;
                 break;
            }
            default :{
                     break;
            }


             }
return(result);
         }