28 lines
696 B
Java
28 lines
696 B
Java
package Maths;
|
|
|
|
/**
|
|
* https://en.wikipedia.org/wiki/Cube_(algebra)
|
|
*/
|
|
public class PerfectCube {
|
|
public static void main(String[] args) {
|
|
assert !isPerfectCube(-1);
|
|
assert isPerfectCube(0);
|
|
assert isPerfectCube(1);
|
|
assert !isPerfectCube(4);
|
|
assert isPerfectCube(8);
|
|
assert isPerfectCube(27);
|
|
|
|
}
|
|
|
|
/**
|
|
* Check if a number is perfect cube or not
|
|
*
|
|
* @param number number to check
|
|
* @return {@code true} if {@code number} is perfect cube, otherwise {@code false}
|
|
*/
|
|
public static boolean isPerfectCube(int number) {
|
|
int a = (int) Math.pow(number, 1.0 / 3);
|
|
return a * a * a == number;
|
|
}
|
|
}
|