2544

jiangshanmeta · Nov 21, 2024 · 6a4fe8f · 6a4fe8f
1 parent f0449c9
commit 6a4fe8f
Showing 1 changed file with 12 additions and 0 deletions.
diff --git a/src/2544.alternating-digit-sum.2630/solution.java b/src/2544.alternating-digit-sum.2630/solution.java
@@ -0,0 +1,12 @@
+class Solution {
+    public int alternateDigitSum(int n) {
+        int sign = String.valueOf(n).length()%2 == 1?1:-1;
+        int result = 0;
+        while( n != 0){
+            result += sign*(n%10);
+            n /= 10;
+            sign *= -1;
+        }
+        return result;
+    }
+}