所有字符的ASCII和值[重复]

Question

为什么我的代码失败了？在for循环的第二次旋转时，它会在chat At函数上失败。

public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);

        int n = Integer.parseInt(scanner.nextLine());
        int sum = 0;

        for (int i = 0; i <n ; i++) {{
            String letter = scanner.nextLine();

            char valueOf = letter.charAt(i);
            int valueto = (int)valueOf;
            sum += valueto;
        }
        }
        System.out.println(sum);

    }
}

Answer 1

您的代码从ith索引中获取字符，这将抛出索引超出范围错误，因为i在整个循环中不断增加。

public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        int n = Integer.parseInt(scanner.nextLine());
        int sum = 0;
        for (int i = 0; i <n ; i++) {{
            String letter = scanner.nextLine();
            // Set charAt 0th index to read the character from the input 
            char valueOf = letter.charAt(0);
            int valueto = (int)valueOf;
            sum += valueto;
        }
        }
        System.out.println(sum);

    }