JavaAlgorithms/Maths/Floor.java

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package Maths;
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import java.util.Random;
public class Floor {
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public static void main(String[] args) {
Random random = new Random();
for (int i = 1; i <= 1000; ++i) {
double randomNumber = random.nextDouble();
assert floor(randomNumber) == Math.floor(randomNumber);
}
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}
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/**
* Returns the largest (closest to positive infinity)
*
* @param number the number
* @return the largest (closest to positive infinity) of given {@code number}
*/
public static double floor(double number) {
if (number - (int) number == 0) {
return number;
} else if (number - (int) number > 0) {
return (int) number;
} else {
return (int) number - 1;
}
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}
}