Double[ ] scores = {1, 2, 3, 4, 5}.
value does java.util.arrays.binarysearch(scores, 3.5) return is -4.
A set is a collection of components or numbers or objects, represented within the curly brackets { }. For instance: {1,2,3,4} is a set of numbers.
set, in mathematics and logic, any collection of objects (elements), which may be mathematical (e.g., numbers and functions) or not.
A set is generally represented as a list of all its members enclosed in braces. The intuitive idea of a set is presumably even older than that of number.
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