Given a integer k and a sting str, the task is to count the number of distinct sub-strings such that each sub-string does not contain some specific characters more than k times. The specific characters are given as another string.
Input: str = “ababab”, anotherStr = “bcd”, k = 1
All valid sub-strings are “a”, “b”, “ab”, “ba” and “aba”
Input: str = “acbacbacaa”, anotherStr = “ycb”, k = 2
- Store characters of anotherStr in a boolean array of size 256 for quick lookip
- Traverse through all substrings of given string. For every substring, keep the count of illegal characters in anotherStr.
- If the count of these characters exceeds the value of k then break out of the inner loop.
- Else, store this sub-string in an hash table to keep distinct substrings.
Below is the implementation of the above approach:
- Count number of substrings with exactly k distinct characters
- Find distinct characters in distinct substrings of a string
- Count of substrings which contains a given character K times
- Count substrings with each character occurring at most k times
- Count of ungrouped characters after dividing a string into K groups of distinct characters
- Count number of distinct substrings of a given length
- Count substrings with same first and last characters
- Count of distinct substrings of a string using Suffix Trie
- Count of distinct substrings of a string using Suffix Array
- Recursive solution to count substrings with same first and last characters
- Count of Substrings that can be formed without using the given list of Characters
- Count of all unique substrings with non-repeating characters
- Count number of substrings of a string consisting of same characters
- Count of distinct characters in a substring by given range for Q queries
- Check whether count of distinct characters in a string is Prime or not
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