hw--string encryption and decryption

 Packaget0817;ImportJava.util.Scanner; Public classStringencrypt { Public Static voidMain (string[] args) {Scanner scanner_1=NewScanner (system.in); String str_1=Scanner_1.nextline (); Charchpass[]=Str_1.tochararray (); Charchresu[]=New Char[Str_1.length ()]; Scanner scanner_2=NewScanner (system.in); String str_2=Scanner_2.nextline (); Charchresu2[]=Str_2.tochararray (); Charchpass2[]=New Char[Str_2.length ()];           Encrypt (Chpass,chresu);           System.out.println (Chresu);           Unencrypt (CHRESU2,CHPASS2);    System.out.println (CHPASS2); }    /** Implement string encryption and output in this function*/     Static voidEncrypt (CharAucpassword[],Charaucresult[]) {         for(inti=0;i<aucpassword.length;i++){            if(aucpassword[i]>= ' A ' &&aucpassword[i]<= ' Z ') {//lowercase Letter One (+1), then uppercase ( -32)                if(aucpassword[i]== ' z ') Aucresult[i]= ' A '; Else{Aucresult[i]=(Char) (aucpassword[i]+1-32); }            }            Else if(aucpassword[i]>= ' A ' &&aucpassword[i]<= ' Z ') {//uppercase to lowercase                 if(aucpassword[i]== ' Z ') Aucresult[i]= ' A '; Else{Aucresult[i]=(Char) (aucpassword[i]+1+32); }            }            Else if(aucpassword[i]>= ' 0 ' &&aucpassword[i]<= ' 9 ') {//Digital                 if(aucpassword[i]== ' 9 ') Aucresult[i]= ' 0 '; ElseAucresult[i]=(Char) (aucpassword[i]+1); }            ElseAucresult[i]=aucpassword[i];//other characters remain unchanged                                }            }    /** Implement string decryption and output in this function*/     Static intUnencrypt (CharResult[],Charpassword[]) {         for(inti=0;i<result.length;i++){            if(result[i]>= ' A ' &&result[i]<= ' Z ') {//lowercase letters to uppercase                if(result[i]== ' a ') Password[i]= ' Z '; Else{Password[i]=(Char) (result[i]-32-1); }            }            Else if(result[i]>= ' A ' &&result[i]<= ' Z ') {//uppercase to lowercase                if(result[i]== ' A ') Password[i]= ' Z '; Else{Password[i]=(Char) (result[i]+32-1); }            }            Else if(result[i]>= ' 0 ' &&result[i]<= ' 9 ') {//Digital                if(result[i]== ' 0 ') Password[i]= ' 9 '; ElsePassword[i]=(Char) (result[i]-1); }            ElsePassword[i]=result[i];//remain unchanged                    }//For Loop        return0; }//J decoding Function    }

Title Description 1, the input string is added and decrypted, and output. 2 Encryption methods are: When the content is an English letter is replaced with the letter of the latter letter, while the letter conversion case, such as the letter A is replaced by B, the letter z is replaced by A; When the content is a number, the number is added 1, such as 0 to replace the replacement 2,9 replacement 0; Other characters do not change. 3, the decryption method is the inverse process of encryption. Interface Description: Implement interfaces, each of which implements 1 basic operations: void Encrypt (char aucpassword[], char aucresult[]): Implements string encryption in this function and outputs Description 1. The string ends with a. 2, string maximum 100 characters. int Unencrypt (char result[], char password[]): Implement string decryption and output in this function Description 1. The string ends with a. 2, string maximum 100 characters.
Knowledge points	String
Run time limit	10M
Memory limit	128
Input	Enter a description Enter a string of passwords to encrypt Enter a string of password encryption
Output	Output description Output encrypted characters Output decrypted characters
Sample input	ABCDEFG BCDEFGH
Sample output	BCDEFGH ABCDEFG

hw--string encryption and decryption