Create 1436-destination-city.kt

Author: a93a

kotlin/1436-destination-city.kt

@@ -0,0 +1,17 @@
+class Solution {
+    fun destCity(paths: List<List<String>>): String {
+        var fromCity: HashSet<String> = hashSetOf()
+        for (path in paths)
+            fromCity.add(path[0])
+
+        var res = paths[0][1]
+        for (path in paths) {
+            if (path[1] !in fromCity) {
+                res = path[1]
+                break
+            }
+        }
+
+        return res
+    }
+}