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:
"aaa"
or "bbb"
).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.
"aaa"
is 'b'
, which is different from 'a'
."aaa"
.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.