求JAVa大神，在线等，急！！！ 有没有会java的大神！在线等、急！！！求次图代码！
\u6c42JAVA\u5927\u795e\u5e2e\u5fd9 \u5728\u7ebf\u7b49 \u6025\u6025\u6025\uff01\uff01\u5b57\u7b26\u4e32\u8fde\u63a5\u7528StringBuffer\u5bf9\u8c61\u7684append\u65b9\u6cd5
\u5b57\u7b26\u4e32\u53cd\u8f6c\u7528reverse\u65b9\u6cd5
\u5220\u9664\u6b63\u5e8f\u524d5\u4e2a\u5b57\u7b26\u53ef\u4ee5\u6539\u7528\u63d0\u53d6\u7b2c6\u4e2a\u5b57\u7b26\u5f00\u59cb\u7684\u5b57\u7b26\u4e32\uff08\u8f6c\u6210String\u540e\u7528substring\u65b9\u6cd5\uff09
\u591a\u62e9\u9898: A D
\u5355\u9009A
\u7b80\u7b54:\u591a\u6001,\u7ee7\u627f,\u5c01\u88c5
-----------------------
1, A
2, B
3, B
4, B
5, D
6, D
7, C
8, A
9, C
10, D
11, D
12, B
13, A
14, D
15, B
16, D
17, C
18, B
19, C
1.A
2.B
3.怎么跟第二题一样 B
4.B
5.D
6.D
7.C
8.A
9.C
10.B
11.D
12.B
13.A
14.D
15.B
16.D
17.C
18.B（A没封号。。）
19.C
1.A 2.B(不能是c) 3.B 4.B 5.D 6.D 7.C 8.A 9.C 10.B 11.C 12.B 13.A 14.D 15.B 16.D 17.C 18.A 19.C
1.A 2.B 3.B 4.B 5.D 6.D 7.C 8.A 9.C 10.B 11.D 12.B 13.A 14.D 15.B 16.D 17.C 18.B 19.C
1:a
2:b
3:b
4:b
5:d
6:d
7:c
8:a
9:c
10:a
11:d
12:b
13:a
14:d
15:b
16:d
17:c
18:b
19:c
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