347. Top K Frequent Elements

347. Top K Frequent Elements/Solution.cs

@@ -0,0 +1,13 @@
+namespace _347._Top_K_Frequent_Elements;
+
+public class Solution
+{
+    public int[] TopKFrequent(int[] nums, int k)
+    {
+        var dictionary = new Dictionary<int, int>();
+        foreach (var num in nums)
+            if (!dictionary.TryAdd(num, 1))
+                dictionary[num]++;
+        return dictionary.OrderByDescending(kp=>kp.Value).Take(k).Select(kp=>kp.Key).ToArray();
+    }
+}