题解 | #密码验证合格程序#

import java.util.*;
import java.util.regex.*;

// 注意类名必须为 Main, 不要有任何 package xxx 信息
public class Main {
    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        // 注意 hasNext 和 hasNextLine 的区别
        while (in.hasNextLine()) { // 注意 while 处理多个 case
            String result = "OK";
            String content = in.nextLine();
            if (content.length() <= 8) {
                result = "NG";
                System.out.println(result);continue;
            }
            char[] chs = content.toCharArray();
            int isUppercase = 0;
            int isLowcase = 0;
            int isNumber = 0;
            int isOtherChar = 0;
            boolean hsaRepeated = false;
            for (char c : chs) {
                int v = Integer.valueOf(c);
               // System.out.println(String.format("%s:%s",c,v));
                if (v >= Integer.valueOf('a') & v <= Integer.valueOf('z')) {
                    isLowcase = 1;
                    continue;
                }
                if (v >= Integer.valueOf('A') & v <= Integer.valueOf('Z')) {
                    isUppercase = 1;
                    continue;
                }
                if (v >= Integer.valueOf('0') && v <= Integer.valueOf('9') ) {
                    isNumber = 1;
                    continue;
                }
                isOtherChar = 1;

            }
            //System.out.println(String.format("%d-%d-%d-%d",isLowcase,isNumber,isOtherChar,isUppercase) );
            if((isLowcase+isNumber+isOtherChar+isUppercase)<3){
                result = "NG";
                System.out.println(result);continue;   
            }

            for(int i=0;i<chs.length;i++){
                if(hasRepeated(i,content)){
                    hsaRepeated=true;
                    break;
                }
            }
            if(hsaRepeated){
                result = "NG";
                System.out.println(result);continue;   
            }
            printVal:System.out.println(result);

            //boolean isMatch = Pattern.matches(pattern, content);
        }
    }
    public static boolean hasRepeated(int curIndex,String val){
        if(curIndex<2){
            return false;
        }
         //System.out.println( "check:"+val.substring(curIndex-2,curIndex+1));
        if(val.substring(curIndex).contains( val.substring(curIndex-2,curIndex+1))){
            return true;
        }

        return false;
    }
}