Refactor classes to declarative agree

[Frankynz]

i suggest to refactor classes to declarative agree for java.

example in BitonicSort.java we have:

void compAndSwap(int a[], int i, int j, int dir) {
    if ((a[i] > a[j] && dir == 1) || (a[i] < a[j] && dir == 0)) {
        // Swapping elements
        int temp = a[i];
        a[i] = a[j];
        a[j] = temp;
    }
}

i suggest: (beacuse this is more readable)

static void compareAndSwap(int[] array, int i, int j, int dir) {
    if ((array[i] > array[j] && dir == 1) || (array[i] < array[j] && dir == 0)) {
        // Swapping elements
        int temp = array[i];
        array[i] = array[j];
        array[j] = temp;
    }
}

and i suggest to declarative comments to java docs like that 
    /**
 * The parameter dir indicates the sorting direction,
 * ASCENDING or DESCENDING; if (array[i] > array[j]) agrees
 * with the direction, then array[i] and array[j] are
 * interchanged.
 */

[siriak]

There is no need to rename the array since the scope of this variable is only 4 lines, but thanks for suggesting it!