convert the code bellow into "if-else"   switch (op1)     {         case '+':         case '-':             return !(op2 == '+' || op2 == '-');         case '*':         case '/':             return op2 == '^' || op2 == '(';         case '^':             return op2 == '(';         case '(':             return true;         default:             return false;     }

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