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 public static void replaceString(String a,String b,String c){
          System.out.println(a);
          String result = a.replaceAll("(?i)"+b, c); //´óСд²»Ãô¸Ð
 
          System.out.println(result);
          System.out.println(a.replaceAll(b, c));//´óСдÃô¸Ð
 
}
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public static void main(String[] args) {
int x = 5;
x++;// x = x + 1;//ºó¼Ó¼Ó
System.out.println(x);
x--;// x = x - 1;//ºó¼õ¼õ
System.out.println(x);
++x;// x = x + 1;//ǰ¼Ó¼Ó
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