Create 1436-destination-city.js

Author: everthis

1436-destination-city.js

@@ -0,0 +1,16 @@
+/**
+ * @param {string[][]} paths
+ * @return {string}
+ */
+const destCity = function(paths) {
+  const hash = {}
+  for(let [s, e] of paths) {
+    if(hash[e] == null) hash[e] = true
+    hash[s] = false
+    if(hash[s] === true) hash[s] = false
+  }
+  
+  for(let k in hash) {
+    if(hash[k]) return k
+  }
+};