题解 | #计算某字符出现次数#

import java.util.Scanner;

// 注意类名必须为 Main, 不要有任何 package xxx 信息
public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        String str = sc.nextLine();
        String target = sc.nextLine();
        int res = 0;
        for (int i = 0; i < str.length(); i++) {
            int cur = str.charAt(i) - target.charAt(0);
            if (cur == 0 || (Character.isLetter(target.charAt(0)) && Math.abs(cur) == 32 )) {
                res++;
            }
        }
        System.out.println(res);
    }
}