三种java 去掉字符串中的重复字符函数 public static void main(string[] args) { system.out.println(removerepeatedchar("ddddccffgd")); } public static string removerepeatedchar(string s) { if (s == null) return s; stringbuilder sb = new stringbuilder(); , len = s.
转载:http://my.oschina.net/jasonultimate/blog/166968 1) Since Strings are immutable in Java if you store password as plain text it will be available in memory until Garbage collector clears it and since String are used in String pool for reusability th
[问题描述] 开发一个密码检查软件,密码要求: 长度超过8位 包括大小写字母.数字.其它符号,以上四种至少三种 不能有相同长度超2的子串重复 [输入形式] 一组或多组长度超过2的子符串.每组占一行 [输出形式] 如果符合要求输出:OK,否则输出NG [样例输入] 021Abc9000 021Abc9Abc1 021ABC9000 021$bc9000 [样例输出] OK NG NG OK import java.util.Scanner; public class Hh { public
//去掉内容的标签 public static String removeTag(String count){ try { int tagCheck=-1; do { int a = count.indexOf("<"); int b = count.indexOf(">"); int len = count.length(); String c=null; c = count.sub
package com.ynet.utils; import java.util.regex.Matcher; import java.util.regex.Pattern; /** * Created by Arya on 2017/11/3 0003. */ public class StringUtil { //去除所有空格 public static String replaceAllBlank(String str) { String s = ""; if (str!=nul
环境介绍:centeros 7 + mysqld5.7 当我们装完数据库以后,使用临时密码登录到数据库去更改一个简单的密码,如 set password='; 结果出现以下提示: ERROR (HY000): Your password does not satisfy the current policy requirements 那么导致问题的原因就是密码规则没有修改喽,以下提供两种方法更改简单密码: .在/etc/my.cnf关闭密码规则 validate_password = off .
public class CheckPassword { //数字 public static final String REG_NUMBER = ".*\\d+.*"; //小写字母 public static final String REG_UPPERCASE = ".*[A-Z]+.*"; //大写字母 public static final String REG_LOWERCASE = ".*[a-z]+.*"; //特殊符号 publ
有一组字符串比如 北京,北京,上海,上海,上海,武汉-------->要得到 北京,上海,武汉 怎么去掉里面重复的字符串? function DelRepetStr(String str) { var result; var list = str.split(","); for(var i=0; i<list.length; i++) { if(result.indexOf(list(i)) == -1 ) result = result + list(i)