import java.util.Scanner; import java.util.regex.Matcher; import java.util.regex.Pattern; public class JAVA { public static void main(String[] args) { String regEx = "\\D+"; Scanner in = new Scanner(System.in); while (in.hasNext()) { String str = in.next(); Pattern p = Pattern.compile(regEx); Matcher m = p.matcher(str); if (!m.find()) { System.out.println("输入的字符串全是数字"); } else { System.out.println("输入的字符串不全是数字"); } } } }
function validNumber(val) { var regex = /^[0-9]+$/; return regex.test(val); }
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