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We all know about intervals in mathematics (e.g -4 < x < 3).
How can I represent these mathematic intervals in Java, e.g, the numbers between -4 and 3 (-4, -3, ..., 2, 3 etc)?
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Check apache commons-lang IntRange . So, if you want to check if a number is in a given interval (range), you do: IntRange range = new IntRange(-4, 3); if (range. contains(x)) { .... }
An integer interval [a,b], a < b, is a set of all consecutive integers beginning with a and ending with b. Write a program that: finds the minimal number of elements in a set containing at least two different integers from each interval. The first line of the input contains the number of intervals n, 1 <= n <= 10000.
An interval represents the time on the time-line between two Instant s. The class stores the start and end instants, with the start inclusive and the end exclusive. The end instant is always greater than or equal to the start instant. The Duration of an interval can be obtained, but is a separate concept.
To check if a number is between two numbers: Use the && (and) operator to chain two conditions.
Check apache commons-lang IntRange. So, if you want to check if a number is in a given interval (range), you do:
IntRange range = new IntRange(-4, 3);
if (range.contains(x)) {
....
}
Google Guava also has a Range class (https://guava.dev/releases/19.0/api/docs/com/google/common/collect/Range.html) that may work for you.
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