Untitled

class Solution {
    public boolean isMatch(String s, String p) {
        boolean[][] arr = new boolean[s.length() + 1][p.length() + 1];
        arr[0][0] = true;
        for (int i = 0; i < p.length(); i++) {
            arr[0][i + 1] = (p.charAt(i) == '*') && arr[0][i - 1];
        }
        for (int i = 0; i < s.length(); i++) {
            for (int j = 0; j < p.length(); j++) {
                if (s.charAt(i) == p.charAt(j) || p.charAt(j) == '.') {
                    arr[i + 1][j + 1] = arr[i][j];
                } else if (p.charAt(j) == '*') {
                    if (arr[i + 1][j - 1]) {
                        arr[i + 1][j + 1] = true;
                    } else if (p.charAt(j - 1) == '.' || s.charAt(i) == p.charAt(j - 1)) {
                        arr[i + 1][j + 1] = arr[i][j + 1];
                    }
                }
            }
        }
        return arr[s.length()][p.length()];
    }
}