lab, SortingNamesWithTime

public class SortingNamesWithTime {
    static long aviTime;
    static long usifTime;

    public static void aviSort(String[] names) {
        long startTime = Utils.getCurrentTime();

        int n = names.length; // number of names in the array

        for (int i = n - 1; i > 0; i--) {
            // find and position item at index i - will not be moved from this
            // index

            for (int j = 0; j < i; j++) {
                if (names[j].compareTo(names[j + 1]) > 0) {
                    // if not correctly ordered then swap names
                    String temp = names[j];
                    names[j] = names[j + 1];
                    names[j + 1] = temp;
                }
            }

            // now starting from position i the array is finally sorted
        }

        long endTime = Utils.getCurrentTime();
        aviTime = endTime - startTime;
    }

    public static void usifSort(String[] names) {
        long startTime = Utils.getCurrentTime();

        int n = names.length; // number of names in the array

        int i = 0; // start sorting from the beginning of the array

        while (i < n - 1) { // if not all sorted
            if (names[i].compareTo(names[i + 1]) > 0) {
                // if not correctly ordered then swap names
                String temp = names[i];
                names[i] = names[i + 1];
                names[i + 1] = temp;
                i = 0; // start sorting from the beginning of the array
            } else {
                // now all items until position i in the array is sorted

                i = i + 1; // move to the next position
            }
        }

        long endTime = Utils.getCurrentTime();
        usifTime = endTime - startTime;
    }

    public static void main(String[] args) {
        // number of students
        int n = 90;
        // get random names
        String[] arr1 = Utils.getRandomNames(n);
        // make a copy of the names
        String[] arr2 = Utils.getNamesCopy(arr1);

        // print source data
        // arr1 has the same data in the same order as arr2
        Utils.printArray(arr1, "\ndata before sorting - unsorted");

        // Avi sorting the data array - arr1
        aviSort(arr1);
        // Usif sorting the data array - arr2
        usifSort(arr2);

        // print the two sorted arrays
        Utils.printArray(arr1, arr2, "\ndata after sorting - Sorted",
                "Avi array", "Usif array");

        System.out.printf("\nAvi  sorted %d names in %d ms\n", n, aviTime);
        System.out.printf("Usif sorted %d names in %d ms\n", n, usifTime);

    }
}