COS126

• Download Reverse.java

/*************************************************************************
 * Name:
 * NetID:
 * Precept:
 *
 * Description: The following two methods reverse the order of elements
 * in an array of Strings.
 *
 * Example:
 * % java Reverse Alice Bob Carol Doug  
 * args[] after reverse1() = Alice Bob Carol Doug
 * args[] after reverse2() = Doug Carol Bob Alice
 *************************************************************************/

public class Reverse {

    // reverse1() takes an array of Strings, and returns a new array of Strings
    // which contains the same elements as the original, but in reverse order.
    // Note, it does not alter the original array.
    public static _________ reverse1(_______________) {
        
    }

    // reverse2() takes an array of Strings and reverses the order of its elements
    // by modifying the original array. This method does not return anything.
    public static _________ reverse2(_______________) {
        
    }

    // print all the Strings in the input array
    public static void printAll(String[] a) {
        for (int i = 0; i < a.length; i++) {
            StdOut.print(a[i] + " ");
        }
        StdOut.println();
    }

    public static void main(String[] args) { 
        
        // reverse1() does not affect args[]
        reverse1(args);
        StdOut.print("args[] after reverse1() = ");
        printAll(args);

        // reverse2() modifies args[]!
        reverse2(args);
        StdOut.print("args[] after reverse2() = ");
        printAll(args);
    }
}