编译原理课后习题答案(陈火旺+第三版)

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第二章

P36-6

(1)

L G ()1是0~9组成的数字串

(2) 最左推导:

N ND NDD NDDD DDDD DDD DD D N ND DD D N ND NDD DDD DD D ⇒⇒⇒⇒⇒⇒⇒⇒⇒⇒⇒⇒⇒⇒⇒⇒⇒⇒0010120127334

556568

最右推导:

N ND N ND N ND N D N ND N D N ND N ND N D ⇒⇒⇒⇒⇒⇒⇒⇒⇒⇒⇒⇒⇒⇒⇒⇒⇒⇒77272712712701274434

886868568

P36-7

G(S)

O N O D N S O AO A AD N

→→→→→1357924680|||||||||||

P36-8

文法:

E T E T E T T

F T F T F F E i

→+-→→|||*|/()| 最左推导:

E E T T T

F T i T i T F i F F i i F i i i E T T F F F i F i E i E T i T T i F T i i T i i F i i i ⇒+⇒+⇒+⇒+⇒+⇒+⇒+⇒+⇒⇒⇒⇒⇒⇒+⇒+⇒+⇒+⇒+⇒+********()*()*()*()*()*()*()

最右推导:

E E T E T

F E T i E F i E i i T i i F i i i i i E T F T F F F E F E T F E F F E i F T i F F i F i i i i i ⇒+⇒+⇒+⇒+⇒+⇒+⇒+⇒+⇒⇒⇒⇒⇒+⇒+⇒+⇒+⇒+⇒+⇒+**********()*()*()*()*()*()*()*()

语法树:/********************************

E

E F

T

E +

T F F T +i

i

i

E

E

F

T

E

-T F F T -i

i

i

E

E

F

T

+T F F

T

i

i

i

*i+i+i

i-i-i

i+i*i

*****************/

P36-9

句子iiiei 有两个语法树:

S iSeS iSei iiSei iiiei S iS iiSeS iiSei iiiei ⇒⇒⇒⇒⇒⇒⇒⇒

P36-10

/**************

)

(|)(|S T T

TS S →→

***************/

P36-11

/*************** L1:

ε

||cC C ab aAb A AC S →→→ L2:

bc

bBc B aA A AB S ||→→→ε

L3:

ε

ε||aBb B aAb A AB S →→→ L4:

A

B B A A B A S |01|10|→→→ε ***************/

第三章习题参考答案

P64–7

(1)

确定化:

最小化:

{,,,,,},{}

{,,,,,}{,,}{,,,,,}{,,,}

{,,,,},{},{}{,,,,}{,,}

{,,,},{},{},{}

{,,,}{,0123456012345135012345124601234560123413501234560123101

0==== 301231240123456011011223323401234561

01

01}{,,,}{,,}

{,},{,}{},{},{}

{,}{}{,}{,}

{,}{}{,}{}{},{},{,},{},{},{}

=====

P64–8

(1)

01)0|1(*

(2)

)5|0(|)5|0()9|8|7|6|5|4|3|2|1|0)(9|8|7|6|5|4|3|2|1(*

(3)

******)110|0(01|)110|0(10

P64–12

(a)

确定化:

给状态编号:

最小化:

{,},{,}

{,}{}{,}{}

{,}{,}{,}{}{,},{},{}

012301101223032330123a b

a b ====

(b)

a

a

已经确定化了,进行最小化

最小化:

{{,}, {,,,}}

012345011012423451305234523452410243535353524012435011012424{,}{}{,}{,}

{,,,}{,,,}{,,,}{,,,}{,}{,}{,}{,}{,}{,}{,}{,}{{,},{,},{,}}

{,}{}{,}{,}{,}a b a b a b a b a b a =============={,}{,}{,}{,}{,}{,}{,}

10243535353524 b a b

a

a

P64–14

(2):

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