HJ96 表示数字

1. 题目

读题

 HJ96 表示数字

 

考查点

 

2. 解法

思路

 

代码逻辑

 

具体实现

 

 自有实现

public class HJ96 {

    public static void main(String[] args) {

        Scanner sc = new Scanner(System.in);
        System.out.println(showNum(sc.nextLine()));
    }

    public static String showNum(String str) {

        char[] arr = str.toCharArray();
        StringBuffer sb = new StringBuffer();

        StringBuffer num = new StringBuffer();
        boolean flag = false;
        for (int i = 0; i < arr.length; i++) {
            char c = arr[i];

            if (Character.isDigit(c)) {
                while (i < arr.length && Character.isDigit(arr[i])) {
                    num.append(arr[i++]);
                }
                i--;
                flag = true;
            } else {
                if (flag) {
                    sb.append("*").append(num).append("*");
                    flag = false;
                    num = new StringBuffer();
                }
                sb.append(c);
            }

        }
        if (Character.isDigit(arr[arr.length - 1])) {
            sb.append("*").append(num).append("*");
        }
        return sb.toString();

    }
}

3. 总结