北电英文笔试考试真题

来源:解志愿时间:

1.tranlation(mandatory)

cdmavendershaveworkedhardtogivecdmaroamingcapabilitiesviathedevelopmentofruim-essentially,asimcardforcdmahandsetscurrentlybeingdeployedinchinafornewcdmaoperatorchinaunicom.koreancellcoktfdemonstratedearlierthisyeartheabilitytoroambetweengsmandcdmausingsuchcards.however,onlythecardcontainingtheuser’sservicedatacanroam-notthecdmahandsetortheuser’snumber(exceptviacallforwarding).

2.programming(mandatory)

linkedlist

a.implementalinkedlistforintegers,whichsupportstheinsertafter(insertanodeafteraspecifiednode)andremoveafter(removethenodeafteraspecifiednode)methods;

b.implementamethodtosortthelinkedlisttodescendingorder.

3.debugging(mandatory)

a.foreachofthefollowingrecursivemethods,enteryintheanswerboxifthemethodterminaters(assumei=5),otherwiseentern.staticintf(inti){

returnf(i-1)*f(i-1);

}

ansewr:

staticintf(inti){

if(i==0){return1;}

else{returnf(i-1)*f(i-1);}

}

ansewr:

staticintf(inti){

if(i==0){return1;}

else{returnf(i-1)*f(i-2);}

}

ansewr:

b.therearetwoerrorsinthefollowingjavaprogram:

staticvoidg(inti){

if(i==1){return;}

if(i%2==0){g(i/2);return;}

else{g(3*i);return;}

}

pleasecorrectthemtomakesurewecangetthepri

nted-outresultasbelow:

3105168421

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