top k frequent elements

Author: iam-edwin

top-k-frequent-elements/iam-edwin.kt

@@ -0,0 +1,10 @@
+class Solution {
+    fun topKFrequent(nums: IntArray, k: Int): IntArray {
+        val countMap = nums.groupBy { it }
+            .mapValues { it.value.size }
+        val sortedList = countMap.entries
+            .sortedByDescending { it.value }
+            .map { it.key }
+        return sortedList.subList(0, k).toIntArray()
+    }
+}