題目描述
題目描述 1、對輸入的字符串進行加解密，并輸出。 2加密方法為： 當內容是英文字母時則用該英文字母的后一個字母替換，同時字母變換大小寫,如字母a時則替換為B；字母Z時則替換為a； 當內容是數字時則把該數字加1，如0替換1，1替換2，9替換0； 其他字符不做變化。 3、解密方法為加密的逆過程。 ? 接口描述： ????實現接口，每個接口實現1個基本操作： void?Encrypt?(char?aucPassword[],?char?aucResult[])：在該函數中實現字符串加密并輸出 說明： 1、字符串以\0結尾。 2、字符串最長100個字符。 ? int?unEncrypt?(char?result[],?char?password[])：在該函數中實現字符串解密并輸出 說明： 1、字符串以\0結尾。 ????2、字符串最長100個字符。
輸入描述:
輸入說明 輸入一串要加密的密碼 輸入一串加過密的密碼
輸出描述:
輸出說明 輸出加密后的字符 輸出解密后的字符
輸入例子:
abcdefg BCDEFGH
輸出例子:
BCDEFGH abcdefg
方法一：
import java.util.Scanner;/**?* Created by Administrator on 2015/12/23.?*/public class Main {????public static void main(String[] args) {????????Scanner sc=new Scanner(System.in);????????while (sc.hasNext()){????????????String strA="ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789";????????????String strB="bcdefghijklmnopqrstuvwxyzaBCDEFGHIJKLMNOPQRSTUVWXYZA1234567890";????????????String str1=sc.next();????????????String str2=sc.next();????????????StringBuffer sb1=new StringBuffer();????????????StringBuffer sb2=new StringBuffer();????????????for(int i=0;i<str1.length();i++){????????????????sb1.append(strB.charAt(strA.indexOf(str1.charAt(i))));????????????}????????????for(int i=0;i<str2.length();i++){????????????????sb2.append(strA.charAt(strB.indexOf(str2.charAt(i))));????????????}????????????System.out.println(sb1);????????????System.out.println(sb2);????????}????}}方法二：
import java.util.Scanner;/**?* Author: 王俊超?* Date: 2015/12/23 13:31?* All Rights Reserved !!!?*/public class Main {????public static void main(String[] args) {????????Scanner scanner = new Scanner(System.in);//??????? Scanner scanner = new Scanner(Main.class.getClassLoader().getResourceAsStream("data.txt"));????????while (scanner.hasNext()) {????????????String input = scanner.nextLine();????????????System.out.println(encrypt(input));????????????input = scanner.nextLine();????????????System.out.println(unencrypt(input));????????}????????scanner.close();????}????/**?????* 字符串解密?????*?????* @param s?????* @return?????*/????private static String unencrypt(String s) {????????char[][] mask = {????????????????{'z', 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y'},????????????????{'Z', 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y'},????????????????{'9', '0', '1', '2', '3', '4', '5', '6', '7', '8'}????????};????????return convert(s, mask);????}????/**?????* 字符串加密?????*?????* @param s?????* @return?????*/????private static String encrypt(String s) {????????char[][] mask = {????????????????{'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z', 'a'},????????????????{'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z', 'A'},????????????????{'1', '2', '3', '4', '5', '6', '7', '8', '9', '0'}????????};????????return convert(s, mask);????}????/**?????* 根據掩碼表對字符串進行轉換?????*?????* @param s?????* @param mask?????* @return?????*/????private static String convert(String s, char[][] mask) {????????StringBuilder builder = new StringBuilder(s.length());????????for (int i = 0; i < s.length(); i++) {????????????char c = s.charAt(i);????????????if (c >= 'A' && c <= 'Z') {????????????????builder.append(mask[0][c - 'A']);????????????} else if (c >= 'a' && c <= 'z') {????????????????builder.append(mask[1][c - 'a']);????????????} else {????????????????builder.append(mask[2][c - '0']);????????????}????????}????????return builder.toString();????}}
