华为OJ平台题：字符串加解密

￡神魔★判官ぃ 2022-08-05 11:14 194阅读 0赞

<table style="border-spacing:0px; border-collapse:collapse; width:960px; margin-bottom:35px; table-layout:fixed; color:rgb(92,92,92); font-family:'Helvetica Neue',Helvetica,Arial,'Lantinghei SC','Hiragino Sans GB','Microsoft YaHei','Wenquanyi Micro Hei',sans-serif; font-size:14px; line-height:20px; widows:1"> 
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 <th style="padding:8px 0px; font-weight:normal; width:86px; margin:1px; border:2px solid rgb(255,255,255); background-color:rgb(207,235,252)"> 描述</th> 
 <td style="padding:8px 20px; word-break:break-all; word-wrap:break-word; border:2px solid rgb(255,255,255); width:872px; background-color:rgb(226,243,253)"> <pre style="overflow:hidden; font-family:monospace,monospace; font-size:1em; white-space:pre-wrap; word-wrap:break-word; line-height:24px">题目描述1、对输入的字符串进行加解密，并输出。2加密方法为：当内容是英文字母时则用该英文字母的后一个字母替换，同时字母变换大小写,如字母a时则替换为B；字母Z时则替换为a；当内容是数字时则把该数字加1，如0替换1，1替换2，9替换0；其他字符不做变化。3、解密方法为加密的逆过程。&nbsp;接口描述：&nbsp;&nbsp;&nbsp;&nbsp;实现接口，每个接口实现1个基本操作：void&nbsp;Encrypt&nbsp;(char&nbsp;aucPassword[],&nbsp;char&nbsp;aucResult[])：在该函数中实现字符串加密并输出说明：1、字符串以\0结尾。2、字符串最长100个字符。&nbsp;int&nbsp;unEncrypt&nbsp;(char&nbsp;result[],&nbsp;char&nbsp;password[])：在该函数中实现字符串解密并输出说明：1、字符串以\0结尾。&nbsp;&nbsp;&nbsp;&nbsp;2、字符串最长100个字符。&nbsp;&nbsp;&nbsp;</pre> </td> 
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 <th style="padding:8px 0px; font-weight:normal; width:86px; margin:1px; border:2px solid rgb(255,255,255); background-color:rgb(207,235,252)"> 知识点</th> 
 <td style="padding:8px 20px; word-break:break-all; word-wrap:break-word; border:2px solid rgb(255,255,255); width:872px; background-color:rgb(226,243,253)"> 字符串</td> 
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 <th style="padding:8px 0px; font-weight:normal; width:86px; margin:1px; border:2px solid rgb(255,255,255); background-color:rgb(207,235,252)"> 运行时间限制</th> 
 <td style="padding:8px 20px; word-break:break-all; word-wrap:break-word; border:2px solid rgb(255,255,255); width:872px; background-color:rgb(226,243,253)"> 10M</td> 
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 <th style="padding:8px 0px; font-weight:normal; width:86px; margin:1px; border:2px solid rgb(255,255,255); background-color:rgb(207,235,252)"> 内存限制</th> 
 <td style="padding:8px 20px; word-break:break-all; word-wrap:break-word; border:2px solid rgb(255,255,255); width:872px; background-color:rgb(226,243,253)"> 128</td> 
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 <th style="padding:8px 0px; font-weight:normal; width:86px; margin:1px; border:2px solid rgb(255,255,255); background-color:rgb(207,235,252)"> 输入</th> 
 <td style="padding:8px 20px; word-break:break-all; word-wrap:break-word; border:2px solid rgb(255,255,255); width:872px; background-color:rgb(226,243,253)"> 输入说明 输入一串要加密的密码 输入一串加过密的密码 </td> 
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 <th style="padding:8px 0px; font-weight:normal; width:86px; margin:1px; border:2px solid rgb(255,255,255); background-color:rgb(207,235,252)"> 输出</th> 
 <td style="padding:8px 20px; word-break:break-all; word-wrap:break-word; border:2px solid rgb(255,255,255); width:872px; background-color:rgb(226,243,253)"> 输出说明 输出加密后的字符 输出解密后的字符 </td> 
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 <th style="padding:8px 0px; font-weight:normal; width:86px; margin:1px; border:2px solid rgb(255,255,255); background-color:rgb(207,235,252)"> 样例输入</th> 
 <td style="padding:8px 20px; word-break:break-all; word-wrap:break-word; border:2px solid rgb(255,255,255); width:872px; background-color:rgb(226,243,253)"> abcdefg BCDEFGH</td> 
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 <th style="padding:8px 0px; font-weight:normal; width:86px; margin:1px; border:2px solid rgb(255,255,255); background-color:rgb(207,235,252)"> 样例输出</th> 
 <td style="padding:8px 20px; word-break:break-all; word-wrap:break-word; border:2px solid rgb(255,255,255); width:872px; background-color:rgb(226,243,253)"> BCDEFGH abcdefg</td> 
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#include <iostream>
 #include <vector>
 #include <stdlib.h>
 #include <stack>
 
 using namespace std;
 #define N 100
 
 /* 对字符串进行加密 */
 void Encrypt (char aucPassword[], char aucResult[])
 {
 	if(aucPassword == NULL)
 	{
 		return;
 	}
 
 	int lenth = 0, i = 0;
 	
 
 	/* 得到字符串的长度 */
 	lenth = strlen(aucPassword);
 
 	for(i = 0; i < lenth; i++)
 	{
 		if(aucPassword[i] == 'Z')
 		{
 			aucResult[i] = 'a';
 		}
 		else if(aucPassword[i] == 'z')
 		{
 			aucResult[i] = 'A';
 		}
 		else if(aucPassword[i] == '9')
 		{
 			aucResult[i] = '0';
 		}
 		else if(aucPassword[i] >= 'A' && aucPassword[i] < 'Z')
 		{
 			aucResult[i] = (aucPassword[i] + 1 - 'A') + 'a';
 		}
 		else if(aucPassword[i] >= 'a' && aucPassword[i] < 'z')
 		{
 			aucResult[i] = (aucPassword[i] + 1 - 'a' ) + 'A';
 		}
 		else if(aucPassword[i] >= '0' && aucPassword[i] < '9')
 		{
 			aucResult[i] = aucPassword[i]+1;
 		}	
 		else
 		{
 			aucResult[i] = aucPassword[i];
 		}
 	}
 	aucResult[i] = '\0';
 	cout << aucResult << endl;
 }
 
 int unEncrypt (char result[], char password[])
 {
 	if(password == NULL)
 	{
 		return -1;
 	}
 
 	int lenth = 0, i = 0;
 	
 
 	/* 得到字符串的长度 */
 	lenth = strlen(password);
 
 	for(i = 0; i < lenth; i++)
 	{
 		if(password[i] == 'A')
 		{
 			result[i] = 'z';
 		}
 		else if(password[i] == 'a')
 		{
 			result[i] = 'Z';
 		}
 		else if(password[i] == '0')
 		{
 			result[i] = '9';
 		}
 		else if(password[i] > 'A' && password[i] <= 'Z')
 		{
 			result[i] = (password[i] - 1 - 'A') + 'a';
 		}
 		else if(password[i] > 'a' && password[i] <= 'z')
 		{
 			result[i] = (password[i] - 1 - 'a' ) + 'A';
 		}
 		else if(password[i] >= '0' && password[i] < '9')
 		{
 			result[i] = password[i]-1;
 		}	
 		else
 		{
 			result[i] = password[i];
 		}
 	}
 	result[i] = '\0';
 	cout << result << endl;
 	return 0;
 }
 
 int main()
 {
 	char passwd[N] = {0};
 	char retPasswd[N] = {0};
 
 	char unPasswd[N] = {0};
 	char retunPasswd[N] = {0};
 
 	gets(passwd);
 	Encrypt(passwd,retPasswd);
 
 	gets(unPasswd);
 	unEncrypt(retunPasswd,unPasswd);
 
 	return 0;
 }