You are given an array of characters letters that is sorted in non-decreasing order, and a character target. There are at least two different characters in letters.
Return the smallest character in letters that is lexicographically greater than target. If such a character does not exist, return the first character in letters.
\n
Example 1:
\n\n\nInput: letters = ["c","f","j"], target = "a"\nOutput: "c"\nExplanation: The smallest character that is lexicographically greater than 'a' in letters is 'c'.\n\n\n
Example 2:
\n\n\nInput: letters = ["c","f","j"], target = "c"\nOutput: "f"\nExplanation: The smallest character that is lexicographically greater than 'c' in letters is 'f'.\n\n\n
Example 3:
\n\n\nInput: letters = ["x","x","y","y"], target = "z"\nOutput: "x"\nExplanation: There are no characters in letters that is lexicographically greater than 'z' so we return letters[0].\n\n\n
\n
Constraints:
\n\n2 <= letters.length <= 104letters[i] is a lowercase English letter.letters is sorted in non-decreasing order.letters contains at least two different characters.target is a lowercase English letter.Compiled with clang 11 using the latest C++ 20 standard.
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