简单的字符转换和反转换函数

文章作者 100test 发表时间 2007:03:26 17:53:14
来源 100Test.Com百考试题网

加密解密时可以用到，只支持小写字母的转换。

private String dmix(String str1)
{
int MAX_COUNT = 20.
char ca[] = str1.toCharArray().
int count = 0.
for(int i = 0. i < ca.length. i )
{
int a = ca[i] - count.
ca[i] = (char)a.
if(ca[i] < a)
ca[i] = \032.
count = count % MAX_COUNT.
}
StringBuffer sb = new StringBuffer().
sb.append(ca).
return sb.toString().
}
public String mix(String str1)
{
int MAX_COUNT = 20.
char ca[] = str1.toCharArray().
int count = 0.
for(int i = 0. i < ca.length. i )
{
int a=0.
a = ca[i] count.
ca[i] = (char)a.
if(ca[i] > z)
ca[i] -= \032.
count = count % MAX_COUNT.
}
StringBuffer sb = new StringBuffer().
sb.append(ca).
return sb.toString().
}