From 9ffe7643672465aaebdc0f2bff1cd1d6225b2e41 Mon Sep 17 00:00:00 2001
From: isaiahliu <isaiahliu@outlook.com>
Date: Fri, 27 Dec 2024 00:15:15 +0800
Subject: [PATCH] 1

---
 src/main/kotlin/p31xx/Problem3159.kt | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)
 create mode 100644 src/main/kotlin/p31xx/Problem3159.kt

diff --git a/src/main/kotlin/p31xx/Problem3159.kt b/src/main/kotlin/p31xx/Problem3159.kt
new file mode 100644
index 00000000..ae53b1d7
--- /dev/null
+++ b/src/main/kotlin/p31xx/Problem3159.kt
@@ -0,0 +1,19 @@
+package p31xx
+
+import util.expect
+
+fun main() {
+    class Solution {
+        fun occurrencesOfElement(nums: IntArray, queries: IntArray, x: Int): IntArray {
+            return nums.indices.filter { nums[it] == x }.let { indices ->
+                queries.map { indices.getOrNull(it - 1) ?: -1 }
+            }.toIntArray()
+        }
+    }
+
+    expect {
+        Solution().occurrencesOfElement(
+            intArrayOf(), intArrayOf(), 1
+        )
+    }
+}