CODEWITHSUNDEEP
javastringintegerstring-math
TronChaser
TronChaser

Reputation: 21

Find numerical values in a string, perform arithmetic on the all numbers in the string, and output a new, revised string containing new values Java

I need to perform arithmetic operations on numbers in a string. I understand that I'll need to parse those numbers out, convert to int, do the math, and then convert back to String.

Example:

n = 2.

Input data: "The building is 350 feet tall with a perimeter of 400 feet".

Output data: The building is 352 feet tall with a perimeter of 402 feet".

I got my for loop iterating through the string and I can affect the value of the number, but I'm having difficulty putting it back into a new, modified string.

Here's where I'm at right now but it's not working

String output = new String();
String tempString = new String();
int newNumb = 0;
int n = 2;
for (int i = 0; i < output.length(); i++){
   Pattern integerPattern = Pattern.compile('-?\\d+');
   Matcher matcher = integerPattern.matcher(output);
   newNumb = (Integer.parse(output) + n);
   tempString = output.replace(output, String.valueOf(newNumb));

Upvotes: 0

Views: 53

Answers (0)

Related Questions