题解 | #字符串通配符#

字符串通配符

https://www.nowcoder.com/practice/43072d50a6eb44d2a6c816a283b02036

import java.util.Scanner;

public class Main {

public static void main(String[] args) {
    Scanner in = new Scanner(System.in);
    String pat = in.next().toLowerCase();
    String input = in.next().toLowerCase();

    int len1 = pat.length();
    int len2 = input.length();

    boolean dp[][] = new boolean[len2 + 1][len1 + 1];

    char[] d1 = pat.toCharArray();
    char[] d2 = input.toCharArray();



    dp[0][0] = true;;
    for (int i = 1; i <= len1; i++) {
        if (d1[i - 1] == '*') {
            dp[0][i] = dp[0][i - 1];
        } else
            dp[0][i] = false;



    }
    for (int j = 1; j <= len2; j++) {
        dp[j][0] = false;
    }

    for (int i = 1; i <= len2; i++) {
        for (int j = 1; j <= len1; j++) {

            if (i == 2 && j == 3) {
                int eee = 1;
            }
            if (d1[j - 1] == d2[i - 1]) {
                dp[i][j] = dp[i - 1][j - 1];
            } else if (d1[j - 1] == '?' && (Character.isLetter(d2[i - 1]) ||
                                            Character.isDigit(d2[i - 1]))) {
                dp[i][j] = dp[i - 1][j - 1];
            } else if (d1[j - 1] == '*'  && (Character.isLetter(d2[i - 1]) ||
                                             Character.isDigit(d2[i - 1]))) {
                dp[i][j] = dp[i - 1][j] || dp[i][j - 1] || dp[i - 1][j - 1];
            } else {
                dp[i][j] = false;
            }
        }
    }

    System.out.println(dp[len2][len1]);


}

}

public class Main {

    public static void main(String[] args) {

        Scanner in = new Scanner(System.in);

        String pat = in.next().toLowerCase();

        String input = in.next().toLowerCase();

        int len1 = pat.length();

        int len2 = input.length();

        boolean dp[][] = new boolean[len2 + 1][len1 + 1];

        char[] d1 = pat.toCharArray();

        char[] d2 = input.toCharArray();

        dp[0][0] = true;;

        for (int i = 1; i <= len1; i++) {

            if (d1[i - 1] == '*') {

                dp[0][i] = dp[0][i - 1];

            } else

                dp[0][i] = false;

        }

        for (int j = 1; j <= len2; j++) {

            dp[j][0] = false;

        }

        for (int i = 1; i <= len2; i++) {

            for (int j = 1; j <= len1; j++) {

                if (i == 2 && j == 3) {

                    int eee = 1;

                }

                if (d1[j - 1] == d2[i - 1]) {

                    dp[i][j] = dp[i - 1][j - 1];

                } else if (d1[j - 1] == '?' && (Character.isLetter(d2[i - 1]) ||

                                                Character.isDigit(d2[i - 1]))) {

                    dp[i][j] = dp[i - 1][j - 1];

                } else if (d1[j - 1] == '*'  && (Character.isLetter(d2[i - 1]) ||

                                                 Character.isDigit(d2[i - 1]))) {

                    dp[i][j] = dp[i - 1][j] || dp[i][j - 1] || dp[i - 1][j - 1];

                } else {

                    dp[i][j] = false;

                }

            }

        }

        System.out.println(dp[len2][len1]);

    }

}

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