1331번 문제 solve (Kotlin)

Author: occidere

Algorithms/1331_Rank_Transform_of_an_Array/Solution.kt

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+/**
+ * @author occidere
+ * @Blog: https://blog.naver.com/occidere
+ * @Github: https://github.com/occidere
+ * @since 2023-01-01
+ */
+class Solution {
+    fun arrayRankTransform(arr: IntArray): IntArray {
+        val rankMap = arr.asSequence()
+            .toSortedSet()
+            .withIndex()
+            .associate { (i, x) -> x to i + 1 }
+        return arr.map { rankMap[it]!! }.toIntArray()
+    }
+}