Function expandCenter

palindromic_substrings_647/solution.go:18–27

expandCenter returns the number of palindromic strings discovered by expanding around the passed left and right index in the passed string s.

(s string, left, right int)

// discovered by expanding around the passed left and right
// index in the passed string s.
func expandCenter(s string, left, right int) int {
	cnt := 0
	for left > -1 && right < len(s) && s[left] == s[right] {
		left--
		right++
		cnt++
	}

	return cnt
}