refactor: refactor scaling statement, DIRECTORY.md update

Author: Alex Klymenko

DIRECTORY.md

@@ -523,6 +523,7 @@
             * [SortAlgorithm](https://github.com/TheAlgorithms/Java/blob/master/src/main/java/com/thealgorithms/sorts/SortAlgorithm.java)
             * [SortUtils](https://github.com/TheAlgorithms/Java/blob/master/src/main/java/com/thealgorithms/sorts/SortUtils.java)
             * [SortUtilsRandomGenerator](https://github.com/TheAlgorithms/Java/blob/master/src/main/java/com/thealgorithms/sorts/SortUtilsRandomGenerator.java)
+            * [SpreadSort](https://github.com/TheAlgorithms/Java/blob/master/src/main/java/com/thealgorithms/sorts/SpreadSort.java)
             * [StoogeSort](https://github.com/TheAlgorithms/Java/blob/master/src/main/java/com/thealgorithms/sorts/StoogeSort.java)
             * [StrandSort](https://github.com/TheAlgorithms/Java/blob/master/src/main/java/com/thealgorithms/sorts/StrandSort.java)
             * [SwapSort](https://github.com/TheAlgorithms/Java/blob/master/src/main/java/com/thealgorithms/sorts/SwapSort.java)
@@ -893,6 +894,7 @@
             * [SortingAlgorithmTest](https://github.com/TheAlgorithms/Java/blob/master/src/test/java/com/thealgorithms/sorts/SortingAlgorithmTest.java)
             * [SortUtilsRandomGeneratorTest](https://github.com/TheAlgorithms/Java/blob/master/src/test/java/com/thealgorithms/sorts/SortUtilsRandomGeneratorTest.java)
             * [SortUtilsTest](https://github.com/TheAlgorithms/Java/blob/master/src/test/java/com/thealgorithms/sorts/SortUtilsTest.java)
+            * [SpreadSortTest](https://github.com/TheAlgorithms/Java/blob/master/src/test/java/com/thealgorithms/sorts/SpreadSortTest.java)
             * [StoogeSortTest](https://github.com/TheAlgorithms/Java/blob/master/src/test/java/com/thealgorithms/sorts/StoogeSortTest.java)
             * [StrandSortTest](https://github.com/TheAlgorithms/Java/blob/master/src/test/java/com/thealgorithms/sorts/StrandSortTest.java)
             * [SwapSortTest](https://github.com/TheAlgorithms/Java/blob/master/src/test/java/com/thealgorithms/sorts/SwapSortTest.java)

src/main/java/com/thealgorithms/sorts/SpreadSort.java

@@ -140,7 +140,8 @@ private <T extends Comparable<T>> Bucket<T>[] createBuckets(final int numBuckets
     private <T extends Comparable<T>> void distributeElements(final T[] array, final int left, final int right, final T min, final T max, final int numBuckets, final Bucket<T>[] buckets) {
         final double range = max.compareTo(min);
         for (int i = left; i <= right; i++) {
-            int bucketIndex = (int) ((array[i].compareTo(min) * numBuckets) / (range + 1));
+            int scaleRangeDifference = array[i].compareTo(min) * numBuckets;
+            int bucketIndex = (int) (scaleRangeDifference/ (range + 1));
             buckets[bucketIndex].add(array[i]);
         }
     }