Create 1839-longest-substring-of-all-vowels-in-order.js

Author: everthis

1839-longest-substring-of-all-vowels-in-order.js

@@ -0,0 +1,25 @@
+/**
+ * @param {string} word
+ * @return {number}
+ */
+function longestBeautifulSubstring(word) {
+  let result = 0,
+    current = 0
+  let currentVowel = "a"
+  const set = new Set()
+  for (let i = 0; i < word.length; i++)
+    if (word.charAt(i) < currentVowel) {
+      set.clear()
+      if (word.charAt(i) == "a") {
+        set.add("a")
+        current = 1
+      } else current = 0
+      currentVowel = "a"
+    } else {
+      current++
+      currentVowel = word.charAt(i)
+      set.add(currentVowel)
+      if (set.size == 5) result = Math.max(result, current)
+    }
+  return result
+}