Create 1652.cpp

LeetCode/1652.cpp

@@ -0,0 +1,37 @@
+
+class Solution {
+public:
+    vector<int> decrypt(vector<int>& code, int k) {
+        if (k == 0) {
+            return vector<int>(code.size(), 0);
+        }
+
+        int n = code.size();
+
+        vector<int> result;
+
+        if (k > 0) {
+            for (int i = 0; i < n; i++) {
+                int sum = 0;
+                for (int j = 0; j < k; j++) {
+                    int index = (i + 1 + j) % n;
+                    sum += code[index];
+                }
+                result.push_back(sum);
+            }
+        }
+        else {
+            for (int i = 0; i < n; i++) {
+                int sum = 0;
+                for (int j = 0; j < -k; j++) {
+                    int index = (i - 1 - j);
+                    if (index < 0) index += n;
+                    sum += code[index];
+                }
+                result.push_back(sum);
+            }
+        }
+
+        return result;
+    }
+};