简单密码__牛客网

Java

牛客853456941号

import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        String str = in.nextLine();
        for (int i = 0; i < str.length(); i ++) {
            if (str.charAt(i) >= 'a' && str.charAt(i) <= 'z' || str.charAt(i) >= '0' &&
                    str.charAt(i) <= '9') {
                toSecret(str.charAt(i));
            } else if (str.charAt(i) >= 'A' && str.charAt(i) <= 'Z') {
                char modifiedChar = bigToSmall(str.charAt(i)); 
                System.out.print(bigToSmall(str.charAt(i)));
            }
        }
    }

    public static void toSecret(char str) {
        if (str >= 'a' && str <= 'c') {
            System.out.print('2');
        } else if (str >= 'd' && str <= 'f') {
            System.out.print('3');
        } else if (str >= 'g' && str <= 'i') {
            System.out.print('4');
        } else if (str >= 'j' && str <= 'l') {
            System.out.print('5');
        } else if (str >= 'm' && str <= 'o') {
            System.out.print('6');
        } else if (str >= 'p' && str <= 's') {
            System.out.print('7');
        } else if (str >= 't' && str <= 'v') {
            System.out.print('8');
        } else if (str >= 'w' && str <= 'z') {
            System.out.print('9');
        } else if (str >= '0' && str <= '9') {
            System.out.print(str);
        }
    }

    public static char bigToSmall(char str) {
        str = (char) (str + 32); 
        if (str == 'z') {
            str = 'a';
        } else {
            str = (char) (str + 1);
        }
        return str;
    }
}

发表于 2025-07-09 17:46:09 回复(0)

Java

我不喝牛奶

import java.util.*;

// 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
            //输入
            String str = in.nextLine();
            //为空或者超长则退出
            if (str.isEmpty() || str.length() > 100 ) {
                break;
            }
            StringBuilder result = new StringBuilder();
            for (char c : str.toCharArray()) {
                //处理小写字母
                if (Character.isLowerCase(c)) {
                    //如果c在字符串中存在，则进入if
                    if ("abc".indexOf(c) != -1) {
                        result.append("2");
                    }
                    if ("def".indexOf(c) != -1) {
                        result.append("3");
                    }
                    if ("ghi".indexOf(c) != -1) {
                        result.append("4");
                    }
                    if ("jkl".indexOf(c) != -1) {
                        result.append("5");
                    }
                    if ("mno".indexOf(c) != -1) {
                        result.append("6");
                    }
                    if ("pqrs".indexOf(c) != -1) {
                        result.append("7");
                    }
                    if ("tuv".indexOf(c) != -1) {
                        result.append(8);
                    }
                    if ("wxyz".indexOf(c) != -1) {
                        result.append(9);
                    }
                }
                //处理大写字母
                if (Character.isUpperCase(c)) {
                    if (c == 'Z') {
                        //对Z进行特殊处理
                        result.append("a");
                    } else {
                        //不是Z的话，将字符转为小写，并且char+1得到下一位小写字母，加入到结果中
                        char temp = Character.toLowerCase(c) ;
                        char[] s = Character.toChars(temp + 1);
                        result.append(s);
                    }
                }
                //处理数字
                if (Character.isDigit(c)) {
                    result.append(c);
                }
            }
            System.out.println(result);
        }
        //
        in.close();
    }
}

发表于 2025-06-23 13:48:29 回复(0)

Java

牛客581109847号

import java.util.*;

// 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
        String target = in.nextLine();

        char[] ch = target.toCharArray();
        char[] ch1 = new char[ch.length];
        for (int i = 0 ; i < ch.length; i++) {
            if (Character.isLowerCase(ch[i])) {
                if (ch[i] == 'a' || ch[i] == 'b' || ch[i] == 'c') {
                    ch1[i] = '2';
                } else if (ch[i] == 'd' || ch[i] == 'e' || ch[i] == 'f') {
                    ch1[i] = '3';
                } else if (ch[i] == 'g' || ch[i] == 'h' || ch[i] == 'i') {
                    ch1[i] = '4';
                } else if (ch[i] == 'j' || ch[i] == 'k' || ch[i] == 'l') {
                    ch1[i] = '5';
                } else if (ch[i] == 'm' || ch[i] == 'n' || ch[i] == 'o') {
                    ch1[i] = '6';
                } else if (ch[i] == 'p' || ch[i] == 'q' || ch[i] == 'r' || ch[i] == 's') {
                    ch1[i] = '7';
                } else if (ch[i] == 't' || ch[i] == 'u' || ch[i] == 'v') {
                    ch1[i] = '8';
                } else if (ch[i] == 'w' || ch[i] == 'x' || ch[i] == 'y' || ch[i] == 'z') {
                    ch1[i] = '9';
                }
            } else if (Character.isUpperCase(ch[i])) {
                ch1[i] = Character.toLowerCase(ch[i]);
                if (ch1[i] == 'z') {
                    ch1[i] = 'a';
                } else {
                    ch1[i] = (char)(ch1[i] + 1);
                }
            } else if (Character.isDigit(ch[i])) {
                ch1[i] = ch[i];
            }
        }
        String result = String.valueOf(ch1);
        System.out.println(result);
    }
}

发表于 2025-05-18 15:41:07 回复(0)

Java

牛客139581682号

import java.util.Scanner;

// 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

String s = in.nextLine();
StringBuilder str = new StringBuilder();
for (int i = 0; i < s.length(); i++) {
if (String.valueOf(s.charAt(i)).equals("a") ||
String.valueOf(s.charAt(i)).equals("b") ||
String.valueOf(s.charAt(i)).equals("c")) {
str.append(2);
} else if (String.valueOf(s.charAt(i)).equals("d") ||
String.valueOf(s.charAt(i)).equals("e") ||
String.valueOf(s.charAt(i)).equals("f")) {
str.append(3);
} else if (String.valueOf(s.charAt(i)).equals("g") ||
String.valueOf(s.charAt(i)).equals("h") ||
String.valueOf(s.charAt(i)).equals("i")) {
str.append(4);
} else if (String.valueOf(s.charAt(i)).equals("j") ||
String.valueOf(s.charAt(i)).equals("k") ||
String.valueOf(s.charAt(i)).equals("l")) {
str.append(5);
} else if (String.valueOf(s.charAt(i)).equals("m") ||
String.valueOf(s.charAt(i)).equals("n") ||
String.valueOf(s.charAt(i)).equals("o")) {
str.append(6);
} else if (String.valueOf(s.charAt(i)).equals("p") ||
String.valueOf(s.charAt(i)).equals("q") ||
String.valueOf(s.charAt(i)).equals("r") ||
String.valueOf(s.charAt(i)).equals("s")) {
str.append(7);
} else if (String.valueOf(s.charAt(i)).equals("t") ||
String.valueOf(s.charAt(i)).equals("u") ||
String.valueOf(s.charAt(i)).equals("v")) {
str.append(8);
} else if (String.valueOf(s.charAt(i)).equals("w") ||
String.valueOf(s.charAt(i)).equals("x") ||
String.valueOf(s.charAt(i)).equals("y") ||
String.valueOf(s.charAt(i)).equals("z")) {
str.append(9);
} else if (String.valueOf(s.charAt(i)).equals("A")) {
str.append("b");
} else if (String.valueOf(s.charAt(i)).equals("B")) {
str.append("c");
} else if (String.valueOf(s.charAt(i)).equals("C")) {
str.append("d");
} else if (String.valueOf(s.charAt(i)).equals("D")) {
str.append("e");
} else if (String.valueOf(s.charAt(i)).equals("E")) {
str.append("f");
} else if (String.valueOf(s.charAt(i)).equals("F")) {
str.append("g");
} else if (String.valueOf(s.charAt(i)).equals("G")) {
str.append("h");
} else if (String.valueOf(s.charAt(i)).equals("H")) {
str.append("i");
} else if (String.valueOf(s.charAt(i)).equals("I")) {
str.append("j");
} else if (String.valueOf(s.charAt(i)).equals("J")) {
str.append("k");
} else if (String.valueOf(s.charAt(i)).equals("K")) {
str.append("l");
} else if (String.valueOf(s.charAt(i)).equals("L")) {
str.append("m");
} else if (String.valueOf(s.charAt(i)).equals("M")) {
str.append("n");
} else if (String.valueOf(s.charAt(i)).equals("N")) {
str.append("o");
} else if (String.valueOf(s.charAt(i)).equals("O")) {
str.append("p");
} else if (String.valueOf(s.charAt(i)).equals("P")) {
str.append("q");
} else if (String.valueOf(s.charAt(i)).equals("Q")) {
str.append("r");
} else if (String.valueOf(s.charAt(i)).equals("R")) {
str.append("s");
} else if (String.valueOf(s.charAt(i)).equals("S")) {
str.append("t");
} else if (String.valueOf(s.charAt(i)).equals("T")) {
str.append("u");
} else if (String.valueOf(s.charAt(i)).equals("U")) {
str.append("v");
} else if (String.valueOf(s.charAt(i)).equals("V")) {
str.append("w");
} else if (String.valueOf(s.charAt(i)).equals("W")) {
str.append("x");
} else if (String.valueOf(s.charAt(i)).equals("X")) {
str.append("y");
} else if (String.valueOf(s.charAt(i)).equals("Y")) {
str.append("z");
} else if (String.valueOf(s.charAt(i)).equals("Z")) {
str.append("a");
} else {
str.append(s.charAt(i));
}
}
System.out.println(str);
}
}

发表于 2025-04-14 17:30:29 回复(1)

Java

牛客78001111号

import java.util.Scanner;

// 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);

String password=in.nextLine();

StringBuilder result = new StringBuilder();

for (char c : password.toCharArray()){

if (Character.isLowerCase(c)) {

// 小写字母映射为对应的数字

result.append(getNumberForLowerCase(c));

} else if (Character.isUpperCase(c)) {

// 大写字母转换为小写，然后向后移动一位

result.append(transformUpperCase(c));

} else {

// 数字保持不变

result.append(c);

}

System.out.println(result);

}

private static int getNumberForLowerCase(char c) {

switch (c) {

case 'a':

case 'b':

case 'c':

return 2;

case 'd':

case 'e':

case 'f':

return 3;

case 'g':

case 'h':

case 'i':

return 4;

case 'j':

case 'k':

case 'l':

return 5;

case 'm':

case 'n':

case 'o':

return 6;

case 'p':

case 'q':

case 'r':

case 's':

return 7;

case 't':

case 'u':

case 'v':

return 8;

case 'w':

case 'x':

case 'y':

case 'z':

return 9;

default:

throw new IllegalArgumentException("Invalid lowercase letter: " + c);

}

private static char transformUpperCase(char c) {

char lowerCaseChar = Character.toLowerCase(c);

switch (lowerCaseChar) {

case 'a':

return 'b';

case 'b':

return 'c';

case 'c':

return 'd';

case 'd':

return 'e';

case 'e':

return 'f';

case 'f':

return 'g';

case 'g':

return 'h';

case 'h':

return 'i';

case 'i':

return 'j';

case 'j':

return 'k';

case 'k':

return 'l';

case 'l':

return 'm';

case 'm':

return 'n';

case 'n':

return 'o';

case 'o':

return 'p';

case 'p':

return 'q';

case 'q':

return 'r';

case 'r':

return 's';

case 's':

return 't';

case 't':

return 'u';

case 'u':

return 'v';

case 'v':

return 'w';

case 'w':

return 'x';

case 'x':

return 'y';

case 'y':

return 'z';

case 'z':

return 'a';

default:

throw new IllegalArgumentException("Invalid uppercase letter: " + c);

}

发表于 2025-02-12 19:29:49 回复(1)

Java

认真的芝士在敲键盘

import java.util.Scanner;

import java.util.*;

// 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.hasNext()) { // 注意 while 处理多个 case

char[] arr = in.nextLine().toCharArray();

StringBuilder s = new StringBuilder();

for (char b : arr) {

if (Character.isLowerCase(b)) {

if (b == 'a' || b == 'b' || b == 'c') {

b = '2';

} else if (b == 'd' || b == 'e' || b == 'f') {

b = '3';

} else if (b == 'g' || b == 'h' || b == 'i') {

b = '4';

} else if (b == 'j' || b == 'k' || b == 'l') {

b = '5';

} else if (b == 'm' || b == 'n' || b == 'o') {

b = '6';

} else if (b == 'p' || b == 'q' || b == 'r' || b == 's') {

b = '7';

} else if (b == 't' || b == 'u' || b == 'v') {

b = '8';

} else if (b == 'w' || b == 'x' || b == 'y' || b == 'z') {

b = '9';

}

} else if (Character.isUpperCase(b)) {

if (b == 'Z') {

b = 'a';

} else if (b >= 'A' || b >= 'Y') {

b = (char)(b + 1);

}

b = Character.toLowerCase(b);

}

s.append(b);

}

System.out.println(s);

}

发表于 2024-09-10 10:49:20 回复(0)

Java

牛客201673936号

import java.util.Arrays;
import java.util.Collections;
import java.util.Map;
import java.util.Scanner;
import java.util.concurrent.ConcurrentHashMap;
import java.util.stream.Collectors;

// 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.hasNext()) { // 注意 while 处理多个 case
            System.out.println(encodePassword(in.nextLine()));
        }
    }
    private static String encodePassword(String password){
        //返回加密密码
        String encodePassword = "";
        Map<String,String> dictMap = new ConcurrentHashMap<>();
       // 字典表
       String a = "1234567890ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz";
       String b = "1234567890bcdefghijklmnopqrstuvwxyza22233344455566677778889999";
        for(int i = 0 ;i < a.length(); i++){
            dictMap.put(Character.toString(a.charAt(i)),Character.toString(b.charAt(i)));
        }
        encodePassword = Arrays.stream(password.split("")).map(s->dictMap.get(s)).collect(Collectors.joining(""));
        return encodePassword;
    }
}

发表于 2024-09-06 01:28:00 回复(0)

Java

牛客499848474号

import java.util.Scanner;

public class Main {

public static void main(String[] args) {

Scanner in = new Scanner(System.in);

char[] res = in.nextLine().toCharArray();

for (int i = 0; i < res.length; i++) {

if (res[i] == 'w' || res[i] == 'x' || res[i] == 'y' || res[i] == 'z') {

res[i] = '9';

} else if (res[i] == 't' || res[i] == 'u' || res[i] == 'v') {

res[i] = '8';

} else if (res[i] == 'p' || res[i] == 'q' || res[i] == 'r' || res[i] == 's') {

res[i] = '7';

} else if (res[i] == 'm' || res[i] == 'n' || res[i] == 'o') {

res[i] = '6';

} else if (res[i] == 'j' || res[i] == 'k' || res[i] == 'l') {

res[i] = '5';

} else if (res[i] == 'g' || res[i] == 'h' || res[i] == 'i') {

res[i] = '4';

} else if (res[i] == 'd' || res[i] == 'e' || res[i] == 'f') {

res[i] = '3';

} else if (res[i] == 'a' || res[i] == 'b' || res[i] == 'c') {

res[i] = '2';

} else if (res[i] >= 'A' && res[i] <= 'Y'){

res[i] += 33; //不能toLowerCase

} else if (res[i] == 'Z'){

res[i] = 'a';

}

System.out.println(res);

}

发表于 2024-08-14 10:44:17 回复(0)

Java

牛客46783331号

import java.util.Scanner;

public class Main {

public static void main(String[] args) {

Scanner in = new Scanner(System.in);

String string = in.nextLine();

System.out.print(changeWords(string));

}

// 获取转换后的密码

private static String changeWords(String string) {

String tempString = string;

String[] array = string.split("");

StringBuilder stringBuilder = new StringBuilder();

for (int i = 0; i < array.length; i++) {

String str1 = changeToLower(array[i]);

if (str1.equals(array[i])) {

stringBuilder.append(changeToUpper(array[i]));

} else {

stringBuilder.append(str1);

}

return stringBuilder.toString();

}

// 转换密码中的小写字母(小写字母都变成九键键盘对应的数字)

private static String changeToLower(String string) {

if ("abc".contains(string)) {

return "2";

}

if ("def".contains(string)) {

return "3";

}

if ("ghi".contains(string)) {

return "4";

}

if ("jkl".contains(string)) {

return "5";

}

if ("mno".contains(string)) {

return "6";

}

if ("pqrs".contains(string)) {

return "7";

}

if ("tuv".contains(string)) {

return "8";

}

if ("wxyz".contains(string)) {

return "9";

}

return string;

}

// 转换密码中的大写字母(大写字母则变成小写之后往后移一位)

private static String changeToUpper(String string) {

if ("Z".equals(string)) {

return "a";

} else {

char x = string.toCharArray()[0];

if (x >= "A".toCharArray()[0] && x < "Z".toCharArray()[0]) {

char y = string.toLowerCase().toCharArray()[0];

return Character.toString((char)(y + 1));

}

return string;

}

发表于 2024-07-15 20:20:41 回复(0)

Java

亚兰德尔

import java.util.Scanner;

// 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);
        int[] index = {2,2,2,3,3,3,4,4,4,5,5,5,6,6,6,7,7,7,7,8,8,8,9,9,9,9};

        char[] input = in.nextLine().toCharArray();
        for(int i=0; i<input.length; i++) {
            if(input[i]>='0' && input[i]<='9') {
                System.out.print(input[i]);
                continue;
            }

            if(input[i]>='a' && input[i]<='z') {
                System.out.print(index[input[i]-'a']);
                continue;
            }

            if(input[i]>='A' && input[i]<'Z') {
                System.out.print((char)(input[i]-'A'+'a'+1));
                continue;
            }

            if(input[i]=='Z') {
                System.out.print('a');
            }
        }
    }
}

发表于 2024-04-27 11:19:20 回复(0)

Java

凯0214

import java.util.Scanner;

// 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 sc = new Scanner(System.in);

String password = sc.nextLine();

String a = "1234567890ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz";

String b = "1234567890bcdefghijklmnopqrstuvwxyza22233344455566677778889999";

String result = "";

for (int i = 0; i < password.length(); i++) {

int index = a.indexOf(password.charAt(i));

result += b.charAt(index);

}

System.out.println(result);

}

编辑于 2024-04-16 23:13:26 回复(0)

Java

勇敢的考拉被加薪

import java.util.Scanner;

// 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.hasNext()) { // 注意 while 处理多个 case

String s = in.next();

for(int i = 0; i < s.length(); i++) {

String temp = s.substring(i, i + 1);

if(temp.matches("[a-z]")) {

System.out.print(getString(temp));

} else if(temp.matches("[A-Z]")) {

System.out.print(mvString(temp));

} else {

System.out.print(temp);

}

//小写

public static String getString(String s) {

String res = "";

if("abc".contains(s)) {

res = "2";

} else if("def".contains(s)){

res = "3";

}else if("ghi".contains(s)){

res = "4";

}else if("jkl".contains(s)){

res = "5";

}else if("mno".contains(s)){

res = "6";

}else if("pqrs".contains(s)){

res = "7";

}else if("tuv".contains(s)){

res = "8";

}else if("wxyz".contains(s)){

res = "9";

}

return res;

}

//大写

public static String mvString(String s) {

String res = "";

if("Z".equals(s)){

res = "a";

} else {

res = String.valueOf((char)(s.toLowerCase().charAt(0) + 1));

}

return res;

}

发表于 2024-03-31 23:38:35 回复(0)

Java

山里灵活的狗123

还是映射表爽啊

import java.util.Scanner;

// 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);
        String line = in.nextLine();
        String password = simplePassword(line);
        System.out.println(password);
    }
    private  static   char[] map = new char[128];
    static {
        map['a'] = '2';map['b'] = '2';map['c'] = '2';
        map['d'] = '3';map['e'] = '3';map['f'] = '3';
        map['g'] = '4';map['h'] = '4';map['i'] = '4';
        map['j'] = '5';map['k'] = '5';map['l'] = '5';
        map['m'] = '6';map['n'] = '6';map['o'] = '6';
        map['p'] = '7';map['q'] = '7';map['r'] = '7';map['s'] = '7';
        map['t'] = '8';map['u'] = '8';map['v'] = '8';
        map['w'] = '9';map['x'] = '9';map['y'] = '9';map['z'] = '9';
        for (char c = 'A'; c < 'Z'; c++) {
            map[c] = (char) (c - 'A' + 'a'+1);
        }
        for (char c = '0'; c <= '9'; c++) {
            map[c] = c;
        }
        map['Z'] = 'a';

    }



    private static String simplePassword(String line) {
        char[] arr = line.toCharArray();
        for (int i = 0; i < arr.length; i++) {
            char c = arr[i];
            char nc = map[c];
            arr[i] = nc;
        }
        return new String(arr);
    }
}

发表于 2024-03-14 14:25:18 回复(0)

Java

小牛的生活

精简版屎山代码

import java.util.Scanner;
public class hj21 {
    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        String str = in.nextLine();
        for (int i = 0; i < str.length(); i++) {
            char c = str.charAt(i);
            if(c >= 'A' && c <= 'Z'){
                c = (char) ((c + 33-97)%26 +97);
            }else if(c >= 'a' && c <= 'c'){
                c = '2';
            }else if(c >= 'd' && c <= 'f'){
                c = '3';
            }else if(c >= 'g' && c <= 'i'){
                c = '4';
            }else if(c >= 'j' && c <= 'l'){
                c = '5';
            }else if(c >= 'm' && c <= 'o'){
                c = '6';
            }else if(c >= 'p' && c <= 's'){
                c = '7';
            }else if(c >= 't' && c <= 'v'){
                c = '8';
            }else if(c >= 'w' && c <= 'z'){
                c = '9';
            }
            System.out.print(c);
        }
    }
}

发表于 2024-01-13 17:42:58 回复(0)

Java

bvwink

 public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        String s = sc.nextLine();
        char[] chars = s.toCharArray();
        StringBuilder sb = new StringBuilder();
        for (char c : chars) {
            //    如果是正整数就不需要加密
            if (c >= '0' && c <= '9') {
                sb.append(c);
            } else if (c >= 'A' && c <= 'Y') {
                //    如果是大写字母 那么就将其转为小写字母并且后移一位
                char c1 = (char) (c + 32 + 1);
                sb.append(c1);
            } else if (c == 'Z') {
                sb.append('a');
            } else {
                //    小写字母进行map校验
                switch (c) {
                    case 1:
                        sb.append(1);
                        break;
                    case 'a':
                    case 'b':
                    case 'c':
                        sb.append(2);
                        break;
                    case 'd':
                    case 'e':
                    case 'f':
                        sb.append(3);
                        break;
                    case 'g':
                    case 'h':
                    case 'i':
                        sb.append(4);
                        break;
                    case 'j':
                    case 'k':
                    case 'l':
                        sb.append(5);
                        break;
                    case 'm':
                    case 'n':
                    case 'o':
                        sb.append(6);
                        break;
                    case 'p':
                    case 'q':
                    case 'r':
                    case 's':
                        sb.append(7);
                        break;
                    case 't':
                    case 'u':
                    case 'v':
                        sb.append(8);
                        break;
                    case 'w':
                    case 'x':
                    case 'y':
                    case 'z':
                        sb.append(9);
                        break;
                    case '0':
                        sb.append(0);
                        break;
                }
            }
        }
        System.out.println(sb);
    }

发表于 2024-01-11 20:40:02 回复(0)

Java

不愿再收感谢信的雪碧很积极

import java.util.*;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

// 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[] arg){
Scanner sc = new Scanner(System.in);
String str = sc.next();
String result = str.replaceAll("[abc]", "2")
.replaceAll("[def]", "3")
.replaceAll("[ghi]", "4")
.replaceAll("[jkl]", "5")
.replaceAll("[mno]", "6")
.replaceAll("[pqrs]", "7")
.replaceAll("[tuv]", "8")
.replaceAll("[wxyz]", "9");
Map<String, String> dict = new HashMap();
for (int i = 'A'; i < 'Z'; i++) {
char i1 = (char) (i + 1);
dict.put(String.valueOf((char) i), String.valueOf(i1).toLowerCase());
}
dict.put("Z", "a");
for (Map.Entry<String, String> entry: dict.entrySet()) {
result = result.replaceAll(entry.getKey(), entry.getValue());
}
System.out.println(result);
}
}

发表于 2024-01-06 21:36:28 回复(0)

Java

牛客375991098号

俺这是写了个啥玩意儿啊

import java.util.Scanner;

// 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
        String str = in.nextLine();
        //1. 小写字母转九键
        // for(int i = 0;i < str.length();i++){
        //     switch(str.charAt(i)){
        //         case 'a','b','c':
        //         str.replace()
        //     }
        // }
        str = str.replace('a','2')
        .replace('b','2')
        .replace('c','2')
        .replace('d','3')
        .replace('e','3')
        .replace('f','3')
        .replace('g','4')
        .replace('h','4')
        .replace('i','4')
        .replace('j','5')
        .replace('k','5')
        .replace('l','5')
        .replace('m','6')
        .replace('n','6')
        .replace('o','6')
        .replace('p','7')
        .replace('q','7')
        .replace('r','7')
        .replace('s','7')
        .replace('t','8')
        .replace('u','8')
        .replace('v','8')
        .replace('w','9')
        .replace('x','9')
        .replace('y','9')
        .replace('z','9')
        //2. 大写字母小写之后后移一位
        .replace('A','b')
        .replace('B','c')
        .replace('C','d')
        .replace('D','e')
        .replace('E','f')
        .replace('F','g')
        .replace('G','h')
        .replace('H','i')
        .replace('I','j')
        .replace('J','k')
        .replace('K','l')
        .replace('L','m')
        .replace('M','n')
        .replace('N','o')
        .replace('O','p')
        .replace('P','q')
        .replace('Q','r')
        .replace('R','s')
        .replace('S','t')
        .replace('T','u')
        .replace('U','v')
        .replace('V','w')
        .replace('W','x')
        .replace('X','y')
        .replace('Y','z')
        .replace('Z','a');
        //输出
        System.out.println(str);
    }
}

发表于 2023-12-21 21:50:59 回复(2)

Java

嘚0吧0哟

import java.util.HashMap;
import java.util.Map;
import java.util.Scanner;

// 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);
        String str = in.nextLine();
        str = str.replaceAll("[abc]", "2")
                .replaceAll("[def]", "3")
                .replaceAll("[ghi]", "4")
                .replaceAll("[jkl]", "5")
                .replaceAll("[mno]", "6")
                .replaceAll("[pqrs]", "7")
                .replaceAll("[tuv]", "8")
                .replaceAll("[wxyz]", "9");

        StringBuilder stb = new StringBuilder();
        for (int i = 0; i < str.length(); i++) {
            String s = str.charAt(i)+"";
            if (s.matches("[A-Z]")) {
                s = s.toLowerCase();
                if ("z".equals(s)) {
                    stb.append("a");
                } else {
                    char c = s.charAt(0);
                    stb.append((char) (c+1));
                }
            } else {
                stb.append(s);
            }
        }
        System.out.println(stb);
    }
}

发表于 2023-09-27 16:39:18 回复(0)

Java

陈六狗

import java.util.Scanner;

// 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);
        String str=in.nextLine();
        for(int i=0;i<str.length();i++){
            if(str.charAt(i)>='a'&&str.charAt(i)<='c'){
                System.out.print("2");
            }else if(str.charAt(i)>='d'&&str.charAt(i)<='f'){
                System.out.print("3");
            }else if(str.charAt(i)>='g'&&str.charAt(i)<='i'){
                System.out.print("4");
            }else if(str.charAt(i)>='j'&&str.charAt(i)<='l'){
                System.out.print("5");
            }else if(str.charAt(i)>='m'&&str.charAt(i)<='o'){
                System.out.print("6");
            }else if(str.charAt(i)>='p'&&str.charAt(i)<='s'){
                System.out.print("7");
            }else if(str.charAt(i)>='t'&&str.charAt(i)<='v'){
                System.out.print("8");
            }else if(str.charAt(i)>='w'&&str.charAt(i)<='z'){
                System.out.print("9");
            }else if(str.charAt(i)>='A'&&str.charAt(i)<='Y'){
                System.out.print((char)((int)str.charAt(i)+33));
            }else if(str.charAt(i)=='Z'){
                System.out.print("a");
            }else{
                System.out.print(str.charAt(i));
            }
        }
    }
}

发表于 2023-09-15 21:11:57 回复(0)

简单密码

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