add another approach using regular expression

Author: rvguradiya

problems/string/find_sum_from_string.md

@@ -0,0 +1,27 @@
+
+import java.util.Arrays;
+import java.util.Scanner;
+
+/**
+ * this approach use sting method to split string, base on nonNumber string as
+ * delimiter
+ */
+class FindSumFromString {
+    public static void main(String[] args) {
+        // read string from stdout
+        Scanner sc = new Scanner(System.in);
+        String str = sc.nextLine();
+
+        System.err.println(sum(str));
+    }
+
+    static int sum(String str) {
+        String strArr[] = str.split("[^0-9]+");
+        int sum = 0;
+        // System.out.println(Arrays.toString(strArr) + str);
+        for (String numString : strArr) {
+            sum += Integer.parseInt(numString);
+        }
+        return sum;
+    }
+}

solutions/string/find_sum_from_string.java renamed to problems/string/find_sum_from_string/Approach.java

@@ -0,0 +1,5 @@
+`03Ju23st 15te5ll10 12me6 3the ti45me 09f567or 06bu7s 23`
+
+From the Given string print sum of the numbers given in the string
+
+`3+23+15+5+10+12+6+3+45+9+567+6+7+23=734`