Thread: help a newb

import java.util.*;
public class array
{
    public static void main(String[] args)
    {
        Scanner x = new Scanner(System.in);
        System.out.print("How many?");
        int intputCount = x.nextInt();
        int[] b = new int[a];
        for(int c = 0; c < a; c++)
        {
            System.out.print("==>");
            b[c] = x.nextInt();
        }
        for(int c = 0; c < a; c++)
        {
            int s = c;
            for(int d = c + 1; d < a; d++)
                if(b[d] < b[s])
                    s = d;
                int t = b[c];
                b[c] = b[s];
                b[s] = t;
        }
        for(int c = 0; c < a; c++)
            System.out.print(b[c] + " ");
        System.out.println();
 
    }
}

I have an idea of what this code does, but how does it work?