JavaAlgorithms/Maths/Ceil.java
shellhub 96345ad634 * factorial using using iteration
* add ceil() to maths
* add combinations() to maths
* add floor() to maths
2020-08-16 19:58:48 +08:00

32 lines
1001 B
Java

package Maths;
public class Ceil {
public static void main(String[] args) {
assert ceil(10) == Math.ceil(10);
assert ceil(-10) == Math.ceil(-10);
assert ceil(10.0) == Math.ceil(10.0);
assert ceil(-10.0) == Math.ceil(-10.0);
assert ceil(10.1) == Math.ceil(10.1);
assert ceil(-10.1) == Math.ceil(-10.1);
assert ceil(0) == Math.ceil(0);
assert ceil(-0) == Math.ceil(-0);
assert ceil(0.0) == Math.ceil(0.0);
assert ceil(-0.0) == Math.ceil(-0.0);
}
/**
* Returns the smallest (closest to negative infinity)
*
* @param number the number
* @return the smallest (closest to negative infinity) of given {@code number}
*/
public static double ceil(double number) {
if (number - (int) number == 0) {
return number;
} else if (number - (int) number > 0) {
return (int) (number + 1);
} else {
return (int) number;
}
}
}