Question

Writing method in Java

Given a string, return the sum of the numbers appearing in the string, ignoring all other characters. A number is a series of 1 or more digit chars in a row. (Note: Character.isDigit(char) tests if a char is one of the chars '0', '1', .. '9'. Integer.parseInt(string) converts a string to an int.)

sumNumbers("abc123xyz") → 123
sumNumbers("aa11b33") → 44
sumNumbers("7 11") → 18

Answer 1

JAVA program to return the sum of numbers appearing in a string

import java.util.Scanner;

public class sum{

static int sumNumbers(String str)
{
  
String temp = "0";
  
  
int sum = 0;
  

for (int i = 0; i < str.length(); i++) {
char ch = str.charAt(i);
  
  
if (Character.isDigit(ch))
temp += ch;
  
else {

sum += Integer.parseInt(temp);
  

temp = "0";
}
}
  

return sum + Integer.parseInt(temp);
}
  

public static void main(String[] args)
{
Scanner sc= new Scanner(System.in);   
System.out.print("Enter a string: ");
String str= sc.nextLine();
System.out.print("You have entered: "+sumNumbers(str));   
}
}

Please give me a thumbs up if it is helpful------------