diff --git a/kotlin/242-Valid-Anagram.kt b/kotlin/242-Valid-Anagram.kt
new file mode 100644
index 000000000..acd562efd
--- /dev/null
+++ b/kotlin/242-Valid-Anagram.kt
@@ -0,0 +1,11 @@
+class Solution {
+    fun isAnagram(s: String, t: String): Boolean {
+        if (s.length != t.length) return false
+        val arr = Array(26) {0}
+        for (i in s.indices) {
+            arr[s[i] - 'a']++
+            arr[t[i] - 'a']--
+        }
+        return arr.all{it == 0}
+    }
+}