Java String Exercises: Calculate the sum of the numbers appear in a given string
Java String: Exercise-89 with Solution
Write a Java program to calculate the sum of the numbers appear in a given string.
Sample Solution:
Java Code:
import java.util.*;
public class Main
{
public int sumOfTheNumbers(String stng)
{
int l = stng.length();
int sum = 0;
String temp = "";
for (int i = 0; i < l; i++)
{
if (Character.isDigit(stng.charAt(i)))
{
if (i < l-1 && Character.isDigit(stng.charAt(i+1)))
{
temp += stng.charAt(i);
}
else
{
temp += stng.charAt(i);
sum += Integer.parseInt(temp);
temp = "";
}
}
}
return sum;
}
public static void main (String[] args)
{
Main m= new Main();
String str1 = "it 15 is25 a 20string";
System.out.println("The given string is: "+str1);
System.out.println("The sum of numbers in the string is: "+m.sumOfTheNumbers(str1));
}
}
Sample Output:
The given string is: it 15 is25 a 20string The sum of numbers in the string is: 60
Pictorial Presentation:
Flowchart:
Java Code Editor:
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Previous: Write a Java program to return a string where every appearance of the lowercase word 'is' has been replaced with'is not'.
Next: Write a Java program to check the number of appearances of the two substrings appear anywhere in the string.
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