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 in = new Scanner(System.in);
        // 注意 hasNext 和 hasNextLine 的区别
        // while (in.hasNextInt()) { // 注意 while 处理多个 case
        //     int a = in.nextInt();
        //     int b = in.nextInt();
        //     System.out.println(a + b);
        // }

        String strs = "";
        Character keyChar = '.';
        while(in.hasNextLine()) {
            //strSum = strSum + in.nextLine();
            strs = in.nextLine().toLowerCase().toString();
            keyChar = in.nextLine().toLowerCase().charAt(0);
        }

        //System.out.println(strs);
        //System.out.println(keyChar);

        int count = 0;


        for(int i = 0; i < strs.length(); i++) {
            if(keyChar.equals(strs.charAt(i))){
                count++;
            }


        }

        System.out.println(count);





    }
}