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23/10/Q2526.h

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+//
+// Created by 李洋 on 2023/10/12.
+//
+
+#ifndef LEECODE_C_Q2526_H
+#define LEECODE_C_Q2526_H
+
+#include <vector>
+
+using namespace std;
+
+class Q2526 {
+public:
+    long long findTheArrayConcVal(vector<int> &nums) {
+        long long ans = 0;
+        for (int i = 0, j = nums.size() - 1; i <= j; i++, j--) {
+            if (i != j) {
+                int temp = nums[j];
+                int digit = 0;
+                while (temp != 0) {
+                    digit++;
+                    temp /= 10;
+                }
+                ans += nums[j] + (long long) nums[i] * pow(10, digit);
+            } else {
+                ans += nums[i];
+            }
+        }
+        return ans;
+    }
+};
+
+#endif //LEECODE_C_Q2526_H