字符转ascii与ascii 转字符

Posted 2021-12-30 2016-cxp

编程：输入a-z,A-Z中的字母组成字符串，输出下一个字母，如：

azAZ  输出：baBA
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public class TestASCII     public static void main(String[] args) 

        String str="azAZ";
        String s = stringToAscii(str);
        System.out.println("str 转化为ascii:"+s);
       String s1 = asciiToString(s);
        System.out.println("str 的ascii加1 后:"+ s1);
    

    public static String stringToAscii(String str)
    
        StringBuffer sbu = new StringBuffer();
        char[] chars = str.toCharArray();
        for (int i = 0; i < chars.length; i++) 
            if(i != chars.length - 1)
            
                sbu.append((int)chars[i]).append(",");
            
            else 
                sbu.append((int)chars[i]);
            
        
        String s = sbu.toString();
        return s;
    
    public static String asciiToString(String  str)
        StringBuffer sb = new StringBuffer();
        String[] chars = str.split(",");
//        System.out.println("chars.toString():"+chars.toString());
        for (int i = 0; i < chars.length; i++) 
            String aChar = chars[i];
            int i1 = Integer.parseInt(aChar);
            i1+=1;
                if(i1==91 )
                    i1=65;
                
                if(i1== 123)
                    i1=97;
                
                sb.append((char)i1);
        
        String asciiToString=sb.toString();
        return asciiToString ;
    

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总结：

 String str="azAZ";
--------------------------------

1 字符得到ascii码， 如

char[] chars = str.toCharArray();

(int)chars[i]》 >>>>>>得到的就是ascii码
--------------------------------
2：ascii 转字母。

 String[] chars = str.split(",");

 String aChar = chars[i];

(char)Integer.parseInt(aChar)；>>>>>得到的就是ascii码对应的字母。