122. Palindromic Substrings

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Input: s = "abc"

Output: 3

Explanation: The palindromic substrings are "a", "b", and "c".

Input: s = "aaa"

Output: 6

Explanation: The palindromic substrings are "a", "a", "a", "aa", "aa", and "aaa".

Input: s = "aba"

Output: 4

Explanation: The palindromic substrings are "a", "b", "a", and "aba".

Time Complexity

O(n²)

Space Complexity

O(1)