Sync LeetCode submission - Difference Between Element Sum and Digit Sum of an Array (rust)

Author: JMoogs

my-folder/problems/difference_between_element_sum_and_digit_sum_of_an_array/solution.rs

@@ -0,0 +1,23 @@
+impl Solution {
+    pub fn difference_of_sum(nums: Vec<i32>) -> i32 {
+        let element_sum: i32 = nums.iter().sum();
+
+        let digit_sum: i32 = nums.into_iter().map(Solution::number_digit_sum).sum();
+
+        return (element_sum - digit_sum).abs();
+    }
+
+    #[inline(always)]
+    fn number_digit_sum(mut num: i32) -> i32 {
+        let mut total = 0;
+        loop {
+            total += num % 10;
+            num /= 10;
+
+            if num == 0 {
+                break;
+            }
+        }
+        total
+    }
+}