Package g2901_3000.s2953_count_complete_substrings

Class Solution

java.lang.Object
g2901_3000.s2953_count_complete_substrings.Solution
public class Solution extends java.lang.Object
2953 - Count Complete Substrings.

Hard

You are given a string word and an integer k.

A substring s of word is complete if:

  • Each character in s occurs exactly k times.
  • The difference between two adjacent characters is at most 2. That is, for any two adjacent characters c1 and c2 in s, the absolute difference in their positions in the alphabet is at most 2.

Return the number of complete substrings of word.

A substring is a non-empty contiguous sequence of characters in a string.

Example 1:

Input: word = “igigee”, k = 2

Output: 3

Explanation: The complete substrings where each character appears exactly twice and the difference between adjacent characters is at most 2 are: igig ee, igig ee , igigee .

Example 2:

Input: word = “aaabbbccc”, k = 3

Output: 6

Explanation: The complete substrings where each character appears exactly three times and the difference between adjacent characters is at most 2 are: **aaa**bbbccc, aaa bbb ccc, aaabbb ccc , **aaabbb**ccc, aaa bbbccc , aaabbbccc .

Constraints:

  • 1 <= word.length <= 105
  • word consists only of lowercase English letters.
  • 1 <= k <= word.length

  • Constructor Summary

    Constructors
    Constructor
    Description
    Solution()
     

  • Method Summary

    Modifier and Type
    Method
    Description
    int
    countCompleteSubstrings(java.lang.String word, int k)
     

    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

    • countCompleteSubstrings

      public int countCompleteSubstrings(java.lang.String word, int k)