Conversions

**apfroggy0408** · 03-03-2008, 09:54 PM

Hey guys having trouble with converting certain bases to other bases. I have a skeleton and some basic stuff written in but I'm getting run-time errors.

Java Code:

/**
 * @(#)Conversions.java
 *
 *
 * @author 
 * @version 1.00 2008/2/26
 */


public class Conversions {

    public static void main(String args[]) 
    {
    	//The next 2 lines are used in all versions.
    	System.out.println("ABCD1234 Base-16 converts to " + BaseConverter.fromHexToBin("ABCD1234") +"in Base-2.\n");
    	System.out.println("E12B47F5 Base-16 converts to " + BaseConverter.fromHexToBin("E12B47F5") +"in Base-2.\n");
    	
    	//The next 2 lines are used in the 90-point versions and above.
    	System.out.println("1011111011101111 Base-2 converts to " + BaseConverter.fromBinToDec("1011111011101111") +"in Base-10.\n");
    	System.out.println("11100100100110110 Base-2 converts to " + BaseConverter.fromBinToDec("11100100100110110") +"in Base-10.\n");
    	
    	//The next line is used in the 95-point versions and above.
    	System.out.println("1011111011101111 Base-2 converts to " + BaseConverter.fromBinToHex("1011111011101111") + "in Base-16.\n");
    	
    	//The next line is used in the 100-point versions and above.
    	System.out.println("11100100100110110 Base-2 converts to " + BaseConverter.fromBinToHex("11100100100110110") + "in Base-16.\n");
    	
    	//The next 3 lines are useed in the 105 and 110-point versions.
    	System.out.println("1000 Base-10 converts to " + BaseConverter.fromDecToAny(1000,5) + "in Base-5.\n");
    	System.out.println("1000 Base-10 converts to " + BaseConverter.fromDecToAny(1000,8) + "in Base-8.\n");
    	System.out.println("200 Base-10 converts to " + BaseConverter.fromDecToAny(200,2) + "in Base-2.\n");
    	
    	//This last line is only used in the 110 point version.
    	System.out.println("48879 Base-10 converts to " + BaseConverter.fromDecToAny(48879,16) + "in Base-16.\n");
    }
}

class BaseConverter
{
	
	public static String fromHexToBin(String hexNum)
	{
		String binNum = ""; 
	
		
		int h = Integer.parseInt("", 10);         
    	String es = Integer.toString(h, 10);
    	int dd = Integer.parseInt(es, 2);
    	System.out.println(es); 
		
		return binNum;
	}
	
	public static int fromBinToDec(String binNum)
	{
		String decNum = "";
		int i = Integer.parseInt("", 2); 
    	String s = Integer.toString(i, 2);
		System.out.println(s);
		int e = Integer.parseInt(s);
		return e;
	}
	
	public static String fromBinToHex(String binNum)
	{
		String hexNum = "";
		//String s = 11;
		//s = hexNum.toString(16);            // 120ff0
    	//if (s.length() % 2 != 0) 
    		{
        
       // s = "0"+s;
		return hexNum;}
	}
	
	public static String fromDecToAny(int decNum, int desiredBase)
	{
		String newNum = "";
		
		return newNum;
	}
}

**apfroggy0408** · 03-04-2008, 05:26 AM

New updated code. Working 80 point version.

Java Code:

/**
 * @(#)Conversions.java
 *
 *
 * @author 
 * @version 1.00 2008/2/26
 */


public class Conversions {

    public static void main(String args[]) 
    {
    	//The next 2 lines are used in all versions.
    	System.out.println("ABCD1234 Base-16 converts to " + BaseConverter.fromHexToBin("ABCD1234") +" in Base-2.\n");
    	System.out.println("E12B47F5 Base-16 converts to " + BaseConverter.fromHexToBin("E12B47F5") +" in Base-2.\n");
    	
    	//The next 2 lines are used in the 90-point versions and above.
    	System.out.println("1011111011101111 Base-2 converts to " + BaseConverter.fromBinToDec("1011111011101111") +" in Base-10.\n");
    	System.out.println("11100100100110110 Base-2 converts to " + BaseConverter.fromBinToDec("11100100100110110") +" in Base-10.\n");
    	
    	//The next line is used in the 95-point versions and above.
    	System.out.println("1011111011101111 Base-2 converts to " + BaseConverter.fromBinToHex("1011111011101111") + " in Base-16.\n");
    	
    	//The next line is used in the 100-point versions and above.
    	System.out.println("11100100100110110 Base-2 converts to " + BaseConverter.fromBinToHex("11100100100110110") + " in Base-16.\n");
    	
    	//The next 3 lines are useed in the 105 and 110-point versions.
    	System.out.println("1000 Base-10 converts to " + BaseConverter.fromDecToAny(1000,5) + " in Base-5.\n");
    	System.out.println("1000 Base-10 converts to " + BaseConverter.fromDecToAny(1000,8) + " in Base-8.\n");
    	System.out.println("200 Base-10 converts to " + BaseConverter.fromDecToAny(200,2) + " in Base-2.\n");
    	
    	//This last line is only used in the 110 point version.
    	System.out.println("48879 Base-10 converts to " + BaseConverter.fromDecToAny(48879,16) + " in Base-16.\n");
    }
}

class BaseConverter
{
	
	public static String fromHexToBin(String hexNum)
	{
		
		
		
		String binNum = ""; 
	
		
		for (int j = 0 ; j<hexNum.length(); j++)
			switch (hexNum.charAt(j))
			{
				case '0' : binNum += "0000"; break;
				case '1' : binNum += "0001"; break;
				case '2' : binNum += "0010"; break;
				case '3' : binNum += "0011"; break;
				case '4' : binNum += "0100"; break;
				case '5' : binNum += "0101"; break;
				case '6' : binNum += "0110"; break;
				case '7' : binNum += "0111"; break;
				case '8' : binNum += "1000"; break;
				case '9' : binNum += "1001"; break;
				case 'A' : binNum += "1010"; break;
				case 'B' : binNum += "1011"; break;
				case 'C' : binNum += "1100"; break;
				case 'D' : binNum += "1101"; break;
				case 'E' : binNum += "1110"; break;
				case 'F' : binNum += "1111"; break;
			}
		
		return binNum;
	}
	
	public static int fromBinToDec(String binNum)
	{
		int decNum = 0;
		
		return decNum;
		
	}
	
	public static String fromBinToHex(String binNum)
	{
		String hexNum = "";
		
		return hexNum;
		
	}
	
	
	public static String fromDecToAny(int decNum, int desiredBase)
	{
		String newNum = "";
		
		return newNum;
	}
}

Would like some help with the rest please

**apfroggy0408** · 03-04-2008, 07:07 AM

Java Code:

/**
 * @(#)Conversions.java
 *
 *
 * @author 
 * @version 1.00 2008/2/26
 */


public class Conversions {

    public static void main(String args[]) 
    {
    	//The next 2 lines are used in all versions.
    	System.out.println("ABCD1234 Base-16 converts to " + BaseConverter.fromHexToBin("ABCD1234") +" in Base-2.\n");
    	System.out.println("E12B47F5 Base-16 converts to " + BaseConverter.fromHexToBin("E12B47F5") +" in Base-2.\n");
    	
    	//The next 2 lines are used in the 90-point versions and above.
    	System.out.println("1011111011101111 Base-2 converts to " + BaseConverter.fromBinToDec("1011111011101111") +" in Base-10.\n");
    	System.out.println("11100100100110110 Base-2 converts to " + BaseConverter.fromBinToDec("11100100100110110") +" in Base-10.\n");
    	
    	//The next line is used in the 95-point versions and above.
    	System.out.println("1011111011101111 Base-2 converts to " + BaseConverter.fromBinToHex("1011111011101111") + " in Base-16.\n");
    	
    	//The next line is used in the 100-point versions and above.
    	System.out.println("11100100100110110 Base-2 converts to " + BaseConverter.fromBinToHex("11100100100110110") + " in Base-16.\n");
    	
    	//The next 3 lines are useed in the 105 and 110-point versions.
    	System.out.println("1000 Base-10 converts to " + BaseConverter.fromDecToAny(1000,5) + " in Base-5.\n");
    	System.out.println("1000 Base-10 converts to " + BaseConverter.fromDecToAny(1000,8) + " in Base-8.\n");
    	System.out.println("200 Base-10 converts to " + BaseConverter.fromDecToAny(200,2) + " in Base-2.\n");
    	
    	//This last line is only used in the 110 point version.
    	System.out.println("48879 Base-10 converts to " + BaseConverter.fromDecToAny(48879,16) + " in Base-16.\n");
    }
}

class BaseConverter
{
	
	public static String fromHexToBin(String hexNum)
	{
		
		
		
		String binNum = ""; 
	
		
		for (int j = 0 ; j<hexNum.length(); j++)
			switch (hexNum.charAt(j))
			{
				case '0' : binNum += "0000"; break;
				case '1' : binNum += "0001"; break;
				case '2' : binNum += "0010"; break;
				case '3' : binNum += "0011"; break;
				case '4' : binNum += "0100"; break;
				case '5' : binNum += "0101"; break;
				case '6' : binNum += "0110"; break;
				case '7' : binNum += "0111"; break;
				case '8' : binNum += "1000"; break;
				case '9' : binNum += "1001"; break;
				case 'A' : binNum += "1010"; break;
				case 'B' : binNum += "1011"; break;
				case 'C' : binNum += "1100"; break;
				case 'D' : binNum += "1101"; break;
				case 'E' : binNum += "1110"; break;
				case 'F' : binNum += "1111"; break;
			}
		
		return binNum;
	}
	
	public static int fromBinToDec(String binNum)
	{
		int decNum = 0;
		
		decNum = Integer.parseInt(binNum,2);
		
		return decNum;
		
	}
	
	public static String fromBinToHex(String binNum)
	{
		String hexNum = "";
		
		
		
		hexNum = Integer.toHexString(Integer.parseInt(binNum, 2));
		
		
		return hexNum;
		
	}
	
	
	public static String fromDecToAny(int decNum, int desiredBase)
	{
		String newNum = "";
		
		//int i = Integer.parseInt(decNum, 10);     // 1023
    	//newNum = Integer.toString(i, 10);
    	  
    	  	
    	  
		
		return newNum;
	}
}

Got 100 points now. Working on 105-110

**Zeroshade15** · 03-05-2008, 12:59 AM

ah very nice froggy. it seemed a lot more complicated than this.. :D
+rep ahaha

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