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"zhangsanshigehaoxuesheng".substring(4, 8)的运行结果是?
2024-01-20 20:41:09
单选题
"zhangsanshigehaoxuesheng".substring(4, 8)的运行结果是?
A.gsan
B.ngsa
C.ngsan
D.gsans
正确答案是A
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String s = "zhangsan"; String s1 = new String("zhangsan");
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删除id为5的学生,对应的sql是:()from student where id = 5;