debugging.java

经典的货郎担问题解决办法

/*
** This code was written by Kent Paul Dolan.  See accompanying file
** TravellerDoc.html for status for your use.
*/

package com.well.www.user.xanthian.java.tools;

import java.util.*;

import com.coyotegulch.tools.*;

public class Debugging
{

/*
** Provide a pause facility, so that visual debugging stuff can be
** studied before it is replaced.  Mostly this is a wrapper to
** accomplish the required try/catch mechanism.
*/

  public static void snooze( long howLong )
  {
    {
      try
      {
        Thread.sleep( howLong );
      }
      catch (Exception e) {}
    }
  }

/*
** Provide debugging aids, which stringify an array into a
** pretty format to use in a debugging dump.
*/

    public static String dump(boolean a[])
    {
      StringBuffer b = new StringBuffer("");
      b.append("[");
      for ( int i = 0; i < a.length; i++ )
      {
        b.append( ( ( i == 0 ) ? "" : "," ) + ( a[i] ? "t" : "f" ) );
      }
      b.append("]");
      return b.toString();
    }

    public static String dump(int a[])
    {
      StringBuffer b = new StringBuffer("");
      b.append("[");
      for ( int i = 0; i < a.length; i++ )
      {
        b.append( ( ( i == 0 ) ? "" : "," ) + String.valueOf( a[i] ) );
      }
      b.append("]");
      return b.toString();
    }

    public static String dump(double a[])
    {
      StringBuffer b = new StringBuffer("");
      b.append("[");
      for ( int i = 0; i < a.length; i++ )
      {
        b.append( ( ( i == 0 ) ? "" : "," ) + String.valueOf( a[i] ) );
      }
      b.append("]");
      return b.toString();
    }

    public static String dump(int a[][])
    {
      StringBuffer b = new StringBuffer("");
      b.append("[");
      for ( int i = 0; i < a.length; i++ )
      {
        if ( a[i] != null )
        {
          b.append( ( ( i == 0 ) ? "" : "," ) );
          b.append("(");
          for ( int j = 0; j < a[i].length; j++ )
          {
            b.append( ( ( j == 0 ) ? "" : "," ) + String.valueOf( a[i][j] ) );
          }
          b.append(")");
        }
      }
      b.append("]");
      return b.toString();
    }

    public static String dump(double a[][])
    {
      StringBuffer b = new StringBuffer("");
      b.append("[");
      for ( int i = 0; i < a.length; i++ )
      {
        b.append( ( ( i == 0 ) ? "" : "," ) );
        b.append("(");
        for ( int j = 0; j < a[i].length; j++ )
        {
          b.append( ( ( j == 0 ) ? "" : "," ) + String.valueOf( a[i][j] ) );
        }
        b.append(")");
      }
      b.append("]");
      return b.toString();
    }

    public static String dump( Vector v )
    {
      StringBuffer b = new StringBuffer("");
      b.append("[");
      for ( int i = 0; i < v.size(); i++ )
      {
        if ( v.elementAt(i) == null )
        {
          b.append( ( ( i == 0 ) ? "" : "," ) + "(null)" );
        }
        else
        {
          b.append( ( ( i == 0 ) ? "" : "," ) + v.elementAt(i).toString() );
        }
      }
      b.append("]");
      return b.toString();
    }

    public static String dump( Object o[] )
    {
      StringBuffer b = new StringBuffer("");
      b.append("[");
      for ( int i = 0; i < o.length; i++ )
      {
        if ( o[i] == null )
        {
          b.append( ( ( i == 0 ) ? "" : "," ) + "(null)" );
        }
        else
        {
          b.append( ( ( i == 0 ) ? "" : "," ) + o[i].toString() );
        }
      }
      b.append("]");
      return b.toString();
    }

}