Package g2501_2600.s2559_count_vowel_strings_in_ranges

Class Solution

java.lang.Object
g2501_2600.s2559_count_vowel_strings_in_ranges.Solution
public class Solution extends java.lang.Object
2559 - Count Vowel Strings in Ranges.

Medium

You are given a 0-indexed array of strings words and a 2D array of integers queries.

Each query queries[i] = [li, ri] asks us to find the number of strings present in the range li to ri (both inclusive ) of words that start and end with a vowel.

Return an array ans of size queries.length, where ans[i] is the answer to the ith query.

Note that the vowel letters are 'a', 'e', 'i', 'o', and 'u'.

Example 1:

Input: words = [“aba”,“bcb”,“ece”,“aa”,“e”], queries = [[0,2],[1,4],[1,1]]

Output: [2,3,0]

Explanation: The strings starting and ending with a vowel are “aba”, “ece”, “aa” and “e”.

The answer to the query [0,2] is 2 (strings “aba” and “ece”).

to query [1,4] is 3 (strings “ece”, “aa”, “e”).

to query [1,1] is 0.

We return [2,3,0].

Example 2:

Input: words = [“a”,“e”,“i”], queries = [[0,2],[0,1],[2,2]]

Output: [3,2,1]

Explanation: Every string satisfies the conditions, so we return [3,2,1].

Constraints:

  • 1 <= words.length <= 105
  • 1 <= words[i].length <= 40
  • words[i] consists only of lowercase English letters.
  • sum(words[i].length) <= 3 * 105
  • 1 <= queries.length <= 105
  • 0 <= li <= ri < words.length

  • Constructor Summary

    Constructors
    Constructor
    Description
    Solution()
     

  • Method Summary

    Modifier and Type
    Method
    Description
    int[]
    vowelStrings(java.lang.String[] words, int[][] queries)
     

    Methods inherited from class java.lang.Object

    clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

  • Constructor Details

    • Solution

      public Solution()

  • Method Details

    • vowelStrings

      public int[] vowelStrings(java.lang.String[] words, int[][] queries)