Explain the difference between early and late binding.
What will be an ideal response?
Early binding occurs when the method definition is associated with the method invocation when the code is compiled. Late binding occurs when the method definition is associated with the method invocation at run time.
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Which of the following is the superclass constructor call syntax?
a. keyword super, followed by a dot (.) . b. keyword super, followed by a set of parentheses containing the superclass constructor arguments. c. keyword super, followed by a dot and the superclass constructor name. d. None of the above.
Develop class Polynomial. The internal representation of a Polynomial is a dictionary of terms. Each term is a key–value pair that contains an exponent and a coefficient. The term 2x4 has the coefficient 2 and the exponent 4. For simplicity, assume the polynomial contains only nonne- gative exponents. Develop the class with a dictionary-based interface for accessing terms that includes the
following elements: a) The class’s constructor accepts a dictionary of exponent:coefficient pairs. b) Coefficient values in a Polynomial are accessed by exponent keys (e.g., polynomial[ exponent ] = coefficient). If a polynomial does not have a coefficient for a specified exponent, the expression polynomial[ exponent ] evaluates to 0. c) The length of a Polynomial is the value of its highest exponent. d) Define method __str__ for representing a Polynomial as a string with terms of the form cxy. e) Include an overloaded addition operator (+) to add two Polynomials. f) Include an overloaded subtraction operator (-) to subtract two Polynomials.