Chapter 12 - Programming Exercise #4: Sum of Digits in a String. HINT: You will

Question

Chapter 12 - Programming Exercise #4: Sum of Digits in a String. HINT: You will need to create a utility procedure that allows you to convert from a character to an integer value to allow you to sum the values of the digits in a string. Also, Raptor will not allow you to input a numeric value and treat it as a String input. To work around this limitation, I would recommend putting a character like 'a' somewhere in your input value so Raptor will treat the input as a String data type. Your program should be designed in such a way that it will ignore any non-numeric characters in the input string.

Explanation / Answer

Program:

  import org.apache.commons.lang.StringUtils;

  public static void main(String[] args)

{

String a = "jklmn489pjro635ops";

int length = a.length();

     char c;

int count = 0;

for(int i=0;i<length;i++)

{

c = a.charAt(i);

if(StringUtils.isNumeric(String.valueOf(c)))

{

count = count + Integer.parseInt(String.valueOf(c));

}

}

   System.out.println(count);

}

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