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Find Special Substring of Length K
You are given a string s and an integer k.
You are given a string s and an integer k.
Determine if there exists a substring of length exactly k in s that satisfies the following conditions:
Return true if such a substring exists. Otherwise, return false.
Example 1
Input: s = "aaabaaa", k = 3
Output: true
Explanation: The substring s[4..6] == "aaa" satisfies the conditions.
Example 2
Input: s = "abc", k = 2
Output: false
Explanation: There is no substring of length 2 that consists of one distinct character and satisfies the conditions.
Constraints
- 1 <= k <= s.length <= 100
- s consists of lowercase English letters only.
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