用异或为文字加密并输出加密文字

package vb; public class abcd { public static void main (String args[]){  char a1 ='十';  char a2 ='点';  char a3 ='进';  char a4 ='攻';  char secret ='A';  a1 = (char)(a1^secret);  a2 = (char)(a2^secret)

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