expressing numbers in words and viceversa

Question

SuperStrict
Rem
Question A01
In banking, processing bankchecks are an important routine used everyday
With thousands of check to process, banking systems have ways to automate
the writing the credit amount in English.

Implement the function
- Answer:String (aInteger:Int)

Arguments:
- "aInteger" stores a number that can be translated with a range
from +/- 2 billion

return:string
- the string containing the english representation

example:
if aInteger = 2034515
then the return result should be
"Two Million thirty four thousand five hundred and fifteen"
End Rem

Function Answer:String (aInteger:Int)

End Function

Answer 1

import javax.swing.*;

class AmountToText
{
private long amount; //stores the numerical amount
private String amtStr; //stores the text string representation of the amount

private long[] digits = new long[10]; //stores the digits of the number

AmountToText()
{
amount=0;
amtStr="";

for (int i=0; i<10; i++) { digits[i]=0; }
}


public String GetAmtStr() { return(amtStr); }
public long GetAmt() { return(amount); }

AmountToText( long amt) { amount = amt; }

public void DoConvert()
{
if (amount != 0)
{
long lAmt = amount; //copies the amount locally
long longIntNum = 1000000000; // 1 billion

for (int i=0; i<10; i++)
{
digits[i] = lAmt / longIntNum;
lAmt %= longIntNum;
longIntNum /= 10;
}

//debug-dumps the digits
for (int j=0; j<10; j++)
{
System.out.println(" j = " + j + " : digit is " + digits[j]);
}

DisplayResult();

}
else
{
amtStr = "zero";
}


} //DoConvert

private String GetTextDigit( long digit)
{

String returnStr=null;

switch ((int)digit)
{
case 1: { returnStr= " one "; break; }
case 2: { returnStr= " two "; break; }
case 3: { returnStr= " three "; break; }
case 4: { returnStr= " four "; break; }
case 5: { returnStr= " five "; break; }
case 6: { returnStr= " six "; break; }
case 7: { returnStr= " seven "; break; }
case 8: { returnStr= " eight "; break; }
case 9: { returnStr= " nine "; break; }
}
return(returnStr);
}

private String Get3DigitStr( long X)
{

String outBuff = " ";

long hundredsDigit = X / 100;

X %= 100;

long tensDigit = X / 10;

long onesDigit = X %= 10;


if (hundredsDigit>0 )
{
outBuff = GetTextDigit(hundredsDigit) + " hundred ";
}

if (tensDigit>1)
{
switch ((int)tensDigit)
{
case 2: { outBuff += " twenty "; break; }
case 3: { outBuff += " thirty "; break; }
case 4: { outBuff += " fourty "; break; }
case 5: { outBuff += " fifty "; break; }
case 6: { outBuff += " sixty "; break; }
case 7: { outBuff += " seventy "; break; }
case 8: { outBuff += " eighty "; break; }
case 9: { outBuff += " ninety "; break; }
}
}
else if (tensDigit==1)
{
switch ((int)onesDigit)
{
case 0: { outBuff += " ten "; break; }
case 1: { outBuff += " eleven "; break; }
case 2: { outBuff += " twelve "; break; }
case 3: { outBuff += " thirteen "; break; }
case 4: { outBuff += " fourteen "; break; }
case 5: { outBuff += " fifteen "; break; }
case 6: { outBuff += " sixteen "; break; }
case 7: { outBuff += " seventeen "; break; }
case 8: { outBuff += " eighteen "; break; }
case 9: { outBuff += " twenty "; break; }

}
}

if ((onesDigit>0) && (tensDigit != 1))
{
outBuff += GetTextDigit(onesDigit);

}

return(outBuff);

} //Get3DigitStr


private void DisplayResult()
{
amtStr = " ";

if (digits[0]>0)
{
amtStr = amtStr + GetTextDigit(digits[0]) + " billion ";
}

long digits3 = digits[1]*100+digits[2]*10+digits[3];

if (digits3>0)
{
amtStr = amtStr + Get3DigitStr(digits3) + " million ";

}

digits3 = digits[4]*100 + digits[5]*10 + digits[6];

if (digits3>0)
{
amtStr = amtStr + Get3DigitStr(digits3) + " thousand ";
}

digits3 = digits[7]*100+digits[8]*10+digits[9];
if (digits3>0)
{
amtStr = amtStr + Get3DigitStr(digits3);
}

System.out.println(amtStr);



} //DisplayResult



public static void main(String args[])
{

String inBuff;
long amt;

if (args.length>0)
{
inBuff = args[0];
}
else
{
inBuff=null;
while (inBuff== null)
{
inBuff = JOptionPane.showInputDialog(" Please input the number");
}
}

amt = Long.parseLong(inBuff);
AmountToText amt2Txt = new AmountToText(amt);

amt2Txt.DoConvert();

System.out.println(amt2Txt.GetAmtStr());

}


}