问题:
Given:
Which two code fragments, inserted independently at line 3, generate the output 4247? ()
A . String s = "123456789";s = (s-"123").replace(1,3,"24") - "89";
B . StringBuffer s = new StringBuffer("123456789");
C . sdelete(0,3).replace(1,3,";24";).delete(4,6);
D . substring(3,6).delete(1,3).insert(1, ";24";);
Given:
Which two code fragments, inserted independently at line 3, generate the output 4247? ()
● 参考解析
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