Thread: Please help me in writing a Java program to find sum of numbers in a random string.(Input=abc235^%$q!12&3 output=250)

Please help me in writing a Java program to find sum of numbers in a random string.(Input=abc235^%$q!12&3 output=250)

If a number has - sign then u should consider it as a negative number.(Input=abc-12t%^&$dcf22 Output=10)

I tried parsing the string and store the number in another string.Once the number start i store it in another string,i keep on appending until I get anything else other than integer.Then I convert the number in string to integer and add it to variable sum. I tried this logic but not able to write correct code. Please send me optimize solution for this problem in Java.

Originally Posted by rjsingh677@gmail.com

I tried parsing the string and store the number in another string.Once the number start i store it in another string,i keep on appending until I get anything else other than integer.Then I convert the number in string to integer and add it to variable sum. I tried this logic but not able to write correct code. Please send me optimize solution for this problem in Java.

Your logic sounds correct.
If you need help with the code you should read the API for String objects in Java.
String Documentation: String (Java Platform SE 6)

Especially the methods "length()", "charAt(int i)" and "substring(int from, int to)" could be useful to you.


If you are still struggling with it after reading the API you might also try to write it in Pseudo-Code and post that; perhaps we can help you translate it into java.

Another way is to use regular expression and find sequence matching in given string and then performing addition operation.

Welcome Mr manebrahma to the forum. Please read this topic to learn how to post code in code or highlight tags and other useful info for new members. If you have any problem regarding your programs, please post your problems at What's Wrong With My Code? But I guess you already did that part.

Thank You for your post.