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) {

    //write your code here......
    return str.length() - str.replace(word,"").length();
}

}