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【单选题】
已知 String s = "xxxxxxxxxxxxxxx#123#456#zzzzz"; int n = s.indexOf("#"); int k = s.indexOf("#", n+1); int m = s.indexOf("#", k+1); String s2 = s.substring(m+1); System.out.println(s2); 则输出的结果是:
A.
123456
B.
123
C.
xxxxxxxxxxxxxxx
D.
zzzzz
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