第四次作业
参考书《数据压缩导论（第4版）》 Page 121 7， 8
解： 由于C(a)=1,C(b)=2,C(r)=3,C(t)=4,所以
解码：<0,0,3>
r
解码：<0,0,1>
ra
解码：<0,0,4>
rat
解码：<2,8,2>
ratatatatatb
解码：<3,1,2>
ratatatatatbab
解码：<0,0,3>
ratatatatatbabr
解码：<6,4,4>
ratatatatatbabratbat
解码：<9,5,4>
ratatatatatbabratbatbabrat
所以编码序列为： ratatatatatbabratbatbabrat
解码：W=20,S=10
解：
1）输入4,5,3,1,2,8,2,7,9,7,4
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1 |
S |
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2 |
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4 |
T |
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5 |
H |
解码的序列为：T
2）输入4,5,3,1,2,8,2,7,9,7,4
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1 |
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2 |
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3 |
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4 |
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5 |
H |
解码的序列为：TH
3）输入4,5,3,1,2,8,2,7,9,7,4
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条目 |
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1 |
S |
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2 |
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3 |
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4 |
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5 |
H |
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6 |
TH |
解码的序列为：THI
4）输入4,5,3,1,2,8,2,7,9,7,4
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1 |
S |
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2 |
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3 |
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4 |
T |
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5 |
H |
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6 |
TH |
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7 |
HI |
解码的序列为：THIS
5）输入4,5,3,1,2,8,2,7,9,7,4
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条目 |
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1 |
S |
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2 |
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3 |
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4 |
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5 |
H |
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6 |
TH |
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7 |
HI |
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8 |
IS |
解码的序列为：THIS_
6）输入4,5,3,1,2,8,2,7,9,7,4
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条目 |
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1 |
S |
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2 |
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3 |
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4 |
T |
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5 |
H |
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6 |
TH |
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7 |
HI |
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8 |
IS |
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9 |
S_ |
解码的序列为：THIS_IS
7）输入4,5,3,1,2,8,2,7,9,7,4
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索引 |
条目 |
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1 |
S |
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2 |
_ |
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3 |
I |
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4 |
T |
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5 |
H |
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6 |
TH |
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7 |
HI |
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8 |
IS |
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9 |
S_ |
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10 |
_IS |
解码的序列为：THIS_IS_
8）输入4,5,3,1,2,8,2,7,9,7,4
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索引 |
条目 |
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1 |
S |
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2 |
_ |
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3 |
I |
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4 |
T |
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5 |
H |
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6 |
TH |
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7 |
HI |
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8 |
IS |
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9 |
S_ |
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10 |
_IS |
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11 |
IS_ |
解码的序列为：THIS_IS_HI
9）输入4,5,3,1,2,8,2,7,9,7,4
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索引 |
条目 |
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1 |
S |
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2 |
_ |
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3 |
I |
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4 |
T |
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5 |
H |
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6 |
TH |
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7 |
HI |
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8 |
IS |
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9 |
S_ |
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10 |
_IS |
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11 |
IS_ |
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12 |
_HI |
解码的序列为：THIS_IS_HIS_
10）输入4,5,3,1,2,8,2,7,9,7,4
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索引 |
条目 |
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1 |
S |
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2 |
_ |
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3 |
I |
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4 |
T |
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5 |
H |
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6 |
TH |
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7 |
HI |
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8 |
IS |
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9 |
S_ |
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10 |
_IS |
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11 |
IS_ |
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12 |
_HI |
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13 |
HIS_ |
解码的序列为：THIS_IS_HIS_HI
11）输入4,5,3,1,2,8,2,7,9,7,4
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索引 |
条目 |
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1 |
S |
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2 |
_ |
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3 |
I |
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4 |
T |
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5 |
H |
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6 |
TH |
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7 |
HI |
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8 |
IS |
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9 |
S_ |
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10 |
_IS |
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11 |
IS_ |
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12 |
_HI |
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13 |
HIS_ |
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14 |
S_HI |
解码的序列为：THIS_IS_HIS_HIT
