10033. Find Longest Special Substring That Occurs Thrice II
You are given a string
sthat consists of lowercase English letters.A string is called special if it is made up of only a single character. For example, the string
"abc"is not special, whereas the strings"ddd","zz", and"f"are special.Return the length of the longest special substring of
swhich occurs at least thrice, or-1if no special substring occurs at least thrice.A substring is a contiguous non-empty sequence of characters within a string.