1446. Consecutive Characters

#### QUESTION:

The power of the string is the maximum length of a non-empty substring that contains only one unique character.

Given a string s, return the power of s.

Example 1:

``````Input: s = "leetcode"
Output: 2
Explanation: The substring "ee" is of length 2 with the character 'e' only.
``````

Example 2:

``````Input: s = "abbcccddddeeeeedcba"
Output: 5
Explanation: The substring "eeeee" is of length 5 with the character 'e' only.
``````

Example 3:

``````Input: s = "triplepillooooow"
Output: 5
``````

Example 4:

``````Input: s = "hooraaaaaaaaaaay"
Output: 11
``````

Example 5:

``````Input: s = "tourist"
Output: 1
``````

Constraints:

``````1 <= s.length <= 500
s consists of only lowercase English letters.
``````

#### SOLUTION:

``````class Solution {
func maxPower(_ s: String) -> Int {
var arrayS = Array(s)
var result: Int = 0
var tmp = 0;
var pre: Character = "1"
for ch in arrayS {
if ch == pre {
tmp += 1;
} else {
pre = ch
tmp = 1;
}
result = result > tmp ? result : tmp
}
return result;
}
}
``````
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