1。通过rex:("\\d+")来提取字符串
Scanner sc = new Scanner(System.in); String[] a = sc.nextLine().split("\\d+"); for(String s : a){ System.out.print(s+" "); }
2。通过rex: [^0-9] 来提取数字
Scanner sc = new Scanner(System.in); //String[] a = sc.nextLine().split("\\d+"); Pattern pattern = Pattern.compile("[^0-9]"); String a = sc.nextLine(); Matcher a1 = pattern.matcher(a); //System.out.println(a1.replaceAll(" ")); String[] dis = a1.replaceAll(" ").split("\\s+"); //到这儿为为止已经提取了数子串 //====下面输出数字串中最大的一个 int temp = 0; for(int i = 0; i < dis.length-1; i++){ if(dis[i].length() < dis[i+1].length()){ temp = i+1; } } System.out.println(dis[temp]);