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Re: I am just in Java.. Please help
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Posted: Apr 4, 2002 10:33 PM
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The problem has a few things in it...
1 separate alpa and numeric characters,
2 parse numeric characters into numbers
3 add numbers.
4 concatenate the alpha characters.
toolbox:
1
java.lang.String.charAt() and or java.lang.String.substring()
boolean isnumber = java.lang.Character.isDigit(char c);
or
if("0123456789".indexOf(String singleStringCharacter)>0) itsadigit ;
String.length()
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int k= Integer.parseInt(String digsequence);
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sum+=k;
4
java.lang.String.concat(anotherString); or simply StringA+=stringb;
Aditionally, you have to figure out whether to insert " " spaces bewteen characters,
and if you want to add single digit numbers, or let the size of the numbers be determined by the character separation.
The basic approach:
Two Strings, one to make into a sentence, and one to parse into a number for the sum.
one number for the sum.
Either a for loop, or a while loop to run through the characters of the string.
read the loop one character at a time,
if it's a character
add it to the sentence string.
if(the char was a digit )parse the digit string and add it to the sum.
set the parse string to "";
else if its a digit
append it to the parseing string.
if the last char was alpha add a " " to the alpha.
This explaination is longer than the actual code would be, coding is often more efficient that way, but I think this should help.
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