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refactor: cleanup DudeneyNumber (#5156)

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This commit is contained in:
Piotr Idzik
2024-05-12 11:05:33 +02:00
committed by GitHub
parent cf6c87c35c
commit 319d5143cc
3 changed files with 23 additions and 24 deletions
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22
src/main/java/com/thealgorithms/maths/DudeneyNumber.java
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@ -11,28 +11,18 @@ public final class DudeneyNumber {
}
// returns True if the number is a Dudeney number and False if it is not a Dudeney number.
public static boolean isDudeney(int n) {
public static boolean isDudeney(final int n) {
if (n <= 0) {
throw new IllegalArgumentException("Input must me positive.");
}
// Calculating Cube Root
int cube_root = (int) (Math.round((Math.pow(n, 1.0 / 3.0))));
final int cube_root = (int) Math.round(Math.pow(n, 1.0 / 3.0));
// If the number is not a perfect cube the method returns false.
if (cube_root * cube_root * cube_root != n) {
return false;
}
int sum_of_digits = 0; // Stores the sums of the digits of the entered number
int temp = n; // A temporary variable to store the entered number
// Loop to calculate the sum of the digits.
while (temp > 0) {
// Extracting the Last digit of the number
int rem = temp % 10;
// Calculating the sum of digits.
sum_of_digits += rem;
// Removing the last digit
temp /= 10;
}
// If the cube root of the number is not equal to the sum of its digits, we return false.
return cube_root == sum_of_digits;
return cube_root == SumOfDigits.sumOfDigits(n);
}
}