Merge pull request #1696 from CodingTestStudy2/염혜정

[염혜정] Day23

Author: github-actions[bot]

leetcode3/염혜정/3945. Digit Frequency Score.java

@@ -0,0 +1,14 @@
+// 0 ~ 9
+// O(log n)
+
+class Solution {
+    public int digitFrequencyScore(int n) {
+        int result = 0;
+        while (n>0) {
+            int digit = n % 10;
+            result += digit;
+            n /= 10;
+        }
+        return result;
+    }
+}