题解 | #计算某字符出现次数#

public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        String one = sc.nextLine().toLowerCase();
        String two = sc.nextLine().toLowerCase();
        int sum = 0;
        while (one.contains(two)) {
            one = one.replaceFirst(two, "");
            sum += 1;
        }
        System.out.println(sum);
        sc.close();

    }
}