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《数据结构与算法?清华)典型例题 - 百度文库

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ѧϰر ӭ

6.3

һѡ

[6-1] ݽṹüϵĹ۵ԱʾΪһԪDS(DR)УD ( )ϣRD( )޼ϡ

A. 㷨 B. Ԫ C. ݲ D. ߼ṹ A. B. ӳ C. 洢 Dϵ

ݽṹļʽ֪ΪB D [6-2] ݵijô洢ṹв( )

A˳洢ṹ BԽṹ C洢ṹ Dɢд洢ṹ ֻͨĴ洢˳洢ʽ洢洢 ɢд洢ɴ˿֪ΪB

[6-3] 㷨ָ( )߱( )ԡ

A㷽 B򷽷 CIJ Dȷ Aִԡֲԡ Bִԡȷԡ Cȷԡԡȶ D׶ԡȶԡȫ

㷨ǶضⲽһָɵС ʣԡԡԡȷԡ޶ԺͿԡɴ˿֪ Ϊ٢B

[6-4] ijУxĸִֵƵΪ( ) for(i=0i

for(j=0j

x=x+l

AO(2n) BO(n) CO(n2) DO(1bn)

ִƵȼظִеĴ㷨ʱ临ӶĿ жxĸֵΪһѭѭ壬ѭѭnΣڲѭҲѭnΣ ȻִдΪnnn2Ρɴ˿֪ΪC

[6-5] ݵĻλͨɸ ɣ ݵСλ

ǻ⣬֪ʶΪݽṹظΪԪأ  Ӧ

[6-6] ݽṹĶ塣

ݽṹָԪ֮໥ϵݵ֯ʽݽṹͨ ݣֱݵ߼ṹݵĴ洢ṹ(ṹ)Щ 㡣üϵĹ۵԰ݽṹʾΪһԪDS(DR)УD ԪصϣRDϹϵ޼ϡ [6-7] ³εʱ临Ӷȡ

for(i=0i

x=x+1 //

for(j=0j<2*nj++) // y++ // }

ѧϰر ӭ

ִƵָظִеĴһ㷨ִƵ֮͹˸㷨ʱ䡣ڱ㷨УٵִƵn+lڵִƵn۵ִƵn(2n+2)2n2-2nִܵƵn(2n+1)2n2+nóεʱ临ӶT(n)(n+1)+n+(2n2+2n)+(2n2+n)4n2+5n+1O(n2) ʵϣ㷨лظִеƵΪ׼Ϊһѭڵ䡣УΪִƵΪ2n2+nˣ 㷨ʱ临ӶT(n)2n2+nO(n2) [6-8] ³εʱ临Ӷȡ i=1

while(i<=m) i=i*2

㷨Ļii*2ִƵΪT(n)У2T(n)n T(n)lbnO(lbn)ˣóεʱ临ӶΪO(lbn)

ѧϰر ӭ

7.3

һѡ

[7-1] ݽṹУʹü޹صݽ( )ṹһֲ( )洢ṹ洢Ա( )ңн( )ЧʱԱниòЧʸߡ

A洢 B C߼ D߼ A˳ B״ Cʽ Dʽ A˳ Bַ C˳򼰶ַ D Aַ Bٲ C˳ D ⿼ǻΪCDAD [7-2] ߱ص( )

AɾҪƶԪ Bһ

CԤռ Dռ䳤ȳ

Աһ㣬ӵһݽһÿ 㡣ΪB

[7-3] ͷĵheadΪյж( ) AheadNULL Bhead_>nextNULL Chead_>nexthead Dhead!NULL

ڲͷĵheadУheadָһݽ㡣ձñûн 㣬headNULLʾõΪաΪA [7-4] ͷĵheadΪյж( ) AheadNULL Bhead>nextNULL Chead> nexthead Dhead!NULL

ڴͷĵheadУheadָͷ㡣ձñֻͷ㣬head>nextNULLʾõΪաΪB

[7-5] ͷѭheadУheadΪյж( ) AheadNULL Bhead>nextNULL Chead> nexthead Dhead!NULL

ڴͷѭheadУheadָͷ㡣ձñֻͷ㣬head>nextheadʾõΪաΪC [7-6] Աʽ洢ʱ洢ַ( )

A Bֵַ CһDz D

ʽ洢ö̬洢ַһ㲻ΪD [7-7] ˫* pǰ½*sIJΪ( )

Ap>prior=ss>next=pp>prior>next=ss>prior=p>prior Bp>prior=sp>prior>next=ss>next=ps>prior=p>prior Cs>next=ps>prior=p>priorpprior=sp>prior>next=s Ds>next=ps>prior=p>priorpprior>next=sp>prior=s

˫ * pǰ½ * sIJͼ7.12ʾͼΪ IJΪ˳򡣱ΪD

ѧϰر ӭ

ͼ7.12 ˫Ĺʾͼ

(7-8) ijõIJһһɾһ㣬( )洢ʽʡʱ䡣

A B˫

Cͷָѭ Dβָѭ

вɾһ㣬޸ڽָĸѡУ ֻѡDܴβָ뾭ٵĽĿҪIJɾ ΪD

[7-9] Ա2nԪأ㷨( )ڵʵҪ˳ʵЧʸߡ

AɾֵΪxԪ BһԪصĺһԪ C˳ǰkԪ DijԪصֵ

ѡAڵϺ˳ʵֵʱ临ӶȶΪO(n)ҪƶԪأڵʵЧʸߡΪA

(7-10) ڳΪn( )ϣɾһԪأ㷨ӶΪO(n) AֻбͷָIJͷѭ BֻβָIJͷѭ CֻбβָĴͷѭ DֻβָĴͷѭ ΪA㷨£ linklist * delfirst(linklist * h) {

Linklist * ph

while(p> next!h) //ҵβ pp>next

p>next=h> next free(h)

returnpһ>next //ͷָ

}

[7-11] ڵн * p * sָΪ ڵн * p * s * p ĺ̽Ϊ * s ĺ̽㣬 * s Ϊ * pĺ̽㡣ָΪs>nextp>nextp>nexts

[7-12] Աʽ洢ṹУÿָĸɷΪ ָӷʽֿɷΪ Ϊѭͨ(ѭ) [7-13] ڵУҪɾijһָĽ㣬ҵý 㡣

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ѧϰر ӭ 6.3 һѡ [6-1] ݽṹüϵĹ۵ԱʾΪһԪDS(DR)УD ( )ϣRD( )޼ϡ A. 㷨 B. Ԫ C. ݲ D. ߼ṹ A. B. ӳ C. 洢 Dϵ ݽṹļʽ֪ΪB D [6-2] ݵijô洢ṹв( ) A˳洢ṹ BԽṹ C洢ṹ Dɢд洢ṹ ֻͨĴ洢˳洢ʽ

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