题解 | #统计字符串中字母出现次数#

import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        String string = "H e l l o ! n o w c o d e r";
        Scanner scanner= new Scanner(System.in);
        String word = scanner.next();
        scanner.close();
        System.out.println(check(string, word));
    }

    public static int check(String str, String word) {
        int sum = 0;
        //write your code here......
        for(int i = 0;i < str.length();i++){
            char s = str.charAt(i);
           if(s == word.charAt(0) && s != ' '){
            sum++;
           }
        }
        return sum;

    }
}