题解 | #在字符串中找出连续最长的数字串#

public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        while (sc.hasNextLine()) {
            String str = sc.nextLine();
            char[] chars = str.toCharArray();
            ArrayList<String> list = new ArrayList<>();
            int end = 0;
            for (int i = 0; i < chars.length; ) {
                if (Character.isDigit(chars[i])) {
                    if(i == chars.length-1){
                        list.add(str.substring(i));
                        break;
                    }
                    for (int j = i + 1; j < chars.length; j++) {
                        if(j == chars.length -1){
                            end = j + 1;
                        }
                        if (!Character.isDigit(chars[j])) {
                            end = j;
                            break;
                        }
                    }
                    list.add(str.substring(i, end));
                    i = end;
                }else{
                    i++;
                }
            }
            int max = 0;
            for (int i = 0; i < list.size(); i++) {
                max = Math.max(list.get(i).length(), max);
            }
            for (int i = 0; i < list.size(); i++) {
                if (list.get(i).length() == max) {
                    System.out.print(list.get(i));
                }
            }
            System.out.println("," + max);
        }
    }
}