初级程序员2011上半年下午试题.doc

2011(1)(5)” T(1:L)”K(1:m)(”n)LTmK(mL)”? TmAAK”(K?)”aaaaaa3”aa C”13” 1 substring(const char strint indexint length)strindex”length”China todayC1(str0)5”3at C11234567891011121314char *substring(const char str, int index, int length)char *tptr=0;int k;/*”*/if (index1 | length0 | index+length-1strlen(Str) return 0;tptr=(char*)malloc(length+1)*sizeof(char);/*”*/if(tptr=0) return 0; /*”*/for(k=0; klength; k+)tptrk=strindex+k-1;tptrlength-1=0; /*“*/return tptr;1substring”()” 2 C2reverse(unsigned int n)”n12344321 (1)”123410123401044 (2)”12310123410343 (3)”12101243102432 (4)”110014321014321 C2 unsigned int reverse(unsigned int n) unsigned int result=0; while( (1) ) result=result *10+n%10; n= (2) ; return result; 22C2(1)(2)3”56712345678123462354879643”reverse”765432143218765135740063062354879643”reverse”“”C”12” naa0a0 ”compactArr_v1compactArr_v2” CompactArr(int aint n)”aa0a CompactArr_v2(int aint n)”i(0)ak(0)a0i10k1 C1 int CompactArr vl(int aint n) int i, k; int *temp=(int*)malloc(n* (1) ); if(!temp) return-1; for(i=0, k=0; in; i+) if(ai!=0) (2) =ai; for(i=0; (3) ; i+) ai=tempi; return k; C2 intCompactArr v2(intaintn) int i, k; for(i=0, k=0; in; i+) if(ai!=0) (4) =ai; return k; CompactArr_v1(1)(3)CompactArr_v2(4)2CompactArr_v1CC(1)(5)” ()” a-(b-5)*ca-(b-5)*c(”)( if Matched(char expr)”expr”Matched”Mismatched (1) (2) (3)”Mismatched“ (4)“”Matched if Matched”BOOLSTACKBOOL typedef enum Mismatched, Matched BOOL; STACK()“ void InitStack(STACK*S) void Push(STACK*S. char e)1 void Pop(STACK*S)1 char Top(STACK S)”S int IsEmpty(STACK S)S”1”0 C BOOL ifMatched(char expr) char *cptr; /*cptr*/ STACK S; char e; InitStack(S); /*/ for(cptr=expr; *cptr!=0 (1) ) if(*cptr=( | *cptr= | *cptr=() (2) ; else if(*cptr=) | *cptr= | *cptr=) if(IsEmpty(S) return Mismatched; e= (3) ;/*/ if (*cptr=) e!=( ) return Mismatched; if(*cptr= e!=) return Mismatched; if (*cptr=) e!= ) return Mismatched; (4) ;/*/ if( (5) )return Matched; return Mismatched; ”C+C+(1)(5)” “5-1Shape(”(virreal)”BoxEllipseCircle()Line C+”5-1“ Ellipse Circle Ellipse C E C+ #includestring #includeiostream using namespace Std; class Shape public: Shape(const String name) m_name=name; Shape() (1) void paint()=0; string getName()const return m_name; private: string m_name; ; /BoxLineEllipse class Ellipse (2) public: Ellipse(const String name): Shape(name)coutE1lipseend1; void paint() coutgetName()end1; ; class Circle (3) public: Circle(const string name): Ellipse(name)(coutCircleend1; ; class Diagram public: void drawAShap(Shape* shape) shape-paint(); void drawShapeS() shapes0=new Circle(C); shapes1=new Ellipse(E); for (int i=0; i2; +1) drawAShap(Shapesi); void close()( /*N$/) private: Shape* shapes2; ; int main() Diagram* diagram= (4) ; diagram-drawShapes(); diagram-close(); (5) diagram; JavaJava(1)(6)” “6-1Shape(abstract)”Box()Ellipse()Line()(extends)ShapeCircle() Java”6-1“ Ellipse Circle Ellipse C E Java (1) class Shape public Shape(String name) =name; (2) void paint(); String getName() return ; final String name; ; /BoxLineEllipse class Ellipse (3) publiC Ellipse(String name) super(name); System.out.println(Ellipse); void paint() / System.out.println(getName(); ; class Circle (4) public Circle(String name) super(name); System.out.println(Circle); ; class Diagram private Shape shapes=new Shape2; public void drawAShape(Shape shape) shape.paint(); void eraseAShape(Shape shape) / void drawShapes() shapes0=new Circle(C); shapes1=new Ellipse(E); for(int i=0; i2; +i) drawAShap(shapesi); / void close() for(int i=0; i2; +i) / (5) ; public static void main(String args) Diagram diagram= (6) ; diagram.drawShapes(); diagram.close(); ”:1L-m+1 2i+m-1 3i+1 4n+1 5A(j)=K(j)”T(1)T(2)T(L)”K(1)K(2)K(m)iT”Tm”A1T(1:m)A(1:m)2T(2:m+1)A(1:m)i”T(i:m+i-1)A(1:m)”T(L-m+1:L)A(1:m)(2)”m+i-1”m+i-1L“m+i-1L“iL-m+1”(1)”L-m+1 A(i)A(i+1)A(i+m-1)K(1)K(2)K(m)”jKj=12mAi+j-1(j=12m)”“”i1T”A”“”n”1(n+1n)(4)”n+1 AK”A(j)K(j)”K(j)?”“A(j)=K(j) or K(j)=?K(j)=?”“(5)”A(j)=K(j)”“j+1j”(3)”i+11”9if(tptr=0)return 0;if(tptr=NULL)return 0;if(!tptr)return 0;12tptrlength=0; *(tptr+length)=0;tptrk=0 *(cptr+k)=0; ”C” ” substring char *substring(const char strint indexint length) index(1)lengthsubstring”index”1length”0indexlengthindex+length-1”6 7”9”tptrtptr=0”=”“tptr 1011”str12“”lengthtptr0length-1tptrlength-1=0tptr”length2(1)n!=0n0 (2)n/10 0(1)”n!=010”(2)n/103“() ”“”1sizeof(int) 2tenlpk+ *(temp+k+) 3ik 4ak+ *(a+k+) C C“” CompactArr_v1(1)”sizeof(int) a0temp for(i=0, k=0; in; i+) if(ai!=0) (2) =ai; k”temp”(2)”tempk+“ka0(3)”ik CompactArr_v2(4)”ak+5”“”() ”CompactArr v2CompactArr_v1“”atemp”“”1cptr+ +cptr cptr+=1 cptr=cptr+1 2Push(S*cptr) 3Top(S) 4Pop(S) 5IsEmpty(S)C ”exprcptr”for”expr for(cptr=expr; *cptr!=0; (1) ) (1)”cptr+ (2)if Matched”“”Push(&S*cptr)” ”“”(3)”Top(S)(4)Pop(S) ”“”for*cptr!=0“(5)(5)”IsEmpty(S)”1virtual 2:public Shape 3:public Ellipse 4new Diagram 5deleteC+“” “DiagramShapeBoxEllipseLineCircleShape”(virtual)BoxEllipseLineShapeShapeCircle()Ellipse Shape”virtualvoid paint()=0paint()virtualEllipseShapeCircleEllipse“”pub