1839. Longest Substring Of All Vowels in Order: RETRY

src/solution/mod.rs

@@ -1386,3 +1386,4 @@ mod s1834_single_threaded_cpu;
 mod s1835_find_xor_sum_of_all_pairs_bitwise_and;
 mod s1837_sum_of_digits_in_base_k;
 mod s1838_frequency_of_the_most_frequent_element;
+mod s1839_longest_substring_of_all_vowels_in_order;

src/solution/s1839_longest_substring_of_all_vowels_in_order.rs

@@ -0,0 +1,85 @@
+/**
+ * [1839] Longest Substring Of All Vowels in Order
+ *
+ * A string is considered beautiful if it satisfies the following conditions:
+ *
+ * 	Each of the 5 English vowels ('a', 'e', 'i', 'o', 'u') must appear at least once in it.
+ * 	The letters must be sorted in alphabetical order (i.e. all 'a's before 'e's, all 'e's before 'i's, etc.).
+ *
+ * For example, strings "aeiou" and "aaaaaaeiiiioou" are considered beautiful, but "uaeio", "aeoiu", and "aaaeeeooo" are not beautiful.
+ * Given a string word consisting of English vowels, return the length of the longest beautiful substring of word. If no such substring exists, return 0.
+ * A substring is a contiguous sequence of characters in a string.
+ *  
+ * Example 1:
+ *
+ * Input: word = "aeiaaio<u>aaaaeiiiiouuu</u>ooaauuaeiu"
+ * Output: 13
+ * Explanation: The longest beautiful substring in word is "aaaaeiiiiouuu" of length 13.
+ * Example 2:
+ *
+ * Input: word = "aeeeiiiioooauuu<u>aeiou</u>"
+ * Output: 5
+ * Explanation: The longest beautiful substring in word is "aeiou" of length 5.
+ *
+ * Example 3:
+ *
+ * Input: word = "a"
+ * Output: 0
+ * Explanation: There is no beautiful substring, so return 0.
+ *
+ *  
+ * Constraints:
+ *
+ * 	1 <= word.length <= 5 * 10^5
+ * 	word consists of characters 'a', 'e', 'i', 'o', and 'u'.
+ *
+ */
+pub struct Solution {}
+
+// problem: https://leetcode.com/problems/longest-substring-of-all-vowels-in-order/
+// discuss: https://leetcode.com/problems/longest-substring-of-all-vowels-in-order/discuss/?currentPage=1&orderBy=most_votes&query=
+
+// submission codes start here
+
+impl Solution {
+    pub fn longest_beautiful_substring(word: String) -> i32 {
+        0
+    }
+}
+
+// submission codes end
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    #[ignore]
+    fn test_1839_example_1() {
+        let word = "aeiaaioaaaaeiiiiouuooaauuaeiu".to_string();
+
+        let result = 13;
+
+        assert_eq!(Solution::longest_beautiful_substring(word), result);
+    }
+
+    #[test]
+    #[ignore]
+    fn test_1839_example_2() {
+        let word = "aeeeiiiioooauuuaeiou".to_string();
+
+        let result = 5;
+
+        assert_eq!(Solution::longest_beautiful_substring(word), result);
+    }
+
+    #[test]
+    #[ignore]
+    fn test_1839_example_3() {
+        let word = "a".to_string();
+
+        let result = 0;
+
+        assert_eq!(Solution::longest_beautiful_substring(word), result);
+    }
+}