Create 2053-kth-distinct-string-in-an-array.js

Author: everthis

2053-kth-distinct-string-in-an-array.js

@@ -0,0 +1,19 @@
+/**
+ * @param {string[]} arr
+ * @param {number} k
+ * @return {string}
+ */
+const kthDistinct = function(arr, k) {
+  let num = 0, hash = {}
+  
+  for(let str of arr) {
+    if(hash[str] == null) hash[str] = 0
+    hash[str]++    
+  }
+  for(let str of arr) {
+    if(hash[str] > 1) continue
+    num++
+    if(num === k) return str
+  }
+  return ''
+};