Add C++ solution of problem #2460

Author: Cuda-Chen

2460/solution.cpp

@@ -0,0 +1,21 @@
+class Solution {
+public:
+    vector<int> applyOperations(vector<int>& A) {
+        int n = A.size();
+        for(int i = 0; i < n - 1; i++) {
+            if(A[i] == A[i + 1]) {
+                A[i] *= 2;
+                A[i + 1] = 0;
+            }
+        }
+
+        vector<int> ans(n);
+        for(int i = 0, idx = 0; i < n; i++) {
+            if(A[i] != 0) {
+                ans[idx] = A[i];
+                idx++;
+            }
+        }
+        return ans;
+    }
+};