a) f : {1, 2, 3, 4} ® {a, b, c, d} f(1) = a f(2) = d f(3) = c f(4) = c b) f : set of students ® R f(student) = one gpa value

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Array

The simplest way to start thinking about an array is as a collection, or a set of elements. In programming, these elements may be constants, variables, functions and pointers.