题解 | #统计大写字母个数#

import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        String input = in.nextLine();
        int count = 0;
        for (int i = 0; i < input.length(); i++) {
            char c = input.charAt(i);
            if (c >= 'A' && c <= 'Z') {
                count++;
            }
        }
        System.out.println(count);
    }
}

解题思路:

1, 对输入字符串每个字符遍历, 进行判断即可