import java.util.*;

public class TestArraysSort {
    static Random r = new Random();
    static String
    ssource = "ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";
    static char[] src =
        ssource.toCharArray();

    static String randString(int length) {
        char[] buf = new char[length];
        for(int i = 0; i < length; i++) {
            int rnd = Math.abs(r.nextInt()) % src.length;
            buf[i] = src[rnd];
        }
        return new String(buf);
    }

    static String[] randStrings(int length, int size) {
        String[] s = new String[size];
        for(int i = 0; i < size; i++) 
			s[i] = randString(length);
        return s;
    } 
	public static void print(String[] s) {
        for(int i = 0; i < s.length; i++)
            System.out.print(s[i] + " ");
        System.out.println();
    } 
	public static void main(String[] args) {
        String[] s = randStrings(4, 10);
        print(s);
        Arrays.<String>sort(s);
        print(s);
        int loc = Arrays.<String>binarySearch(s, s[2]);
        System.out.println("Location of " + s[2] + " is " + loc);
    }
}