feat: Calculate sum of all elements in the array including negatives

🧠 Logic:
- Initialize `sum` to 0.
- Use enhanced for loop (`for-each`) to iterate over all elements in the array.
- Accumulate each value in `sum`, regardless of whether it’s positive or negative.
- Print the final computed sum.

Signed-off-by: Somesh diwan <[email protected]>

Author: Someshdiwan

Section9ArrayAB/Array 2.0/src/SumOfArray.java

@@ -7,7 +7,6 @@ public static void main(String[] args) {
             sum+=i;
         }
         System.out.println(sum);
-
         /*
         for (int i=0; i<arr.length;i++) {
             sum+=arr[i];