JavaAlgorithms/Maths/PerfectCube.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;
  }
}