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Evaluare_recursivitate_XI

Authored by Carmen Preoteasa

Education

11th Grade

Used 5+ times

Evaluare_recursivitate_XI
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9 questions

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1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Funcţia F are definiţia alăturată. Ce valoare are F(3)?

int F(int n)

{

if(n==0 || n==1) return 1;

else

return 2*F(n-1)+2*F(n-2);

}

1

12

6

10

2.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Subprogramul f are definiţia alăturată. Ce se va afişa în urma apelului f(12345);?

void f(long n)

{

if (n>9)

{cout<<n/100;

f(n/10);

}

}

1231210

123121

1234123121

123

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Ce valoare are f(100)?

int f(int n)

{ if(n==0) return 0; else return n%2+f(n/2); }

16

3

10

30

4.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Pentru subprogramul suma definit alăturat, scrieţi valoarea expresiei suma(5,4).

int suma (int a,int b)

{ if (a==0 && b==0) return 0;

else

if (a==0) return 1+suma(a,b-1);

else return 1+suma(a-1,b);

}

10

20

9

18

5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Se consideră subprogramul recursiv f1 definit alăturat. Ce se va afişa în urma apelului f1(5);?

void f1(int x)

{ if (x<=9)

{ cout<<x+1;

f1(x+2);

cout<<x+3;

}

}

68101

681012108

2108

68112108

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Subprogramul re este definit alăturat. Ce valoarea are re(1)? Dar re(14)?

int re(int i)

{ if (i<9) return 3+re(i+2);

else

if (i==9) return -2;

else return 1+re(i-1);

}

re(1)=10 re(14)=3

re(1)=3 re(14)=10

re(1)=3 re(14)=3

re(1)=10 re(14)=10

7.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Considerăm subprogramul f definit alăturat. Ce valoare are f(7,11)? Dar f(11,7)?

int f(int x,int y)

{ if(x<=y) return x-y; return f(y-x,x-1)+3; }

f(7,11)=-14 f(11,7)=-11

f(7,11)=-11 f(11,7)=-4

f(7,11)=-2 f(11,7)=-10

f(7,11)=-4 f(11,7)=-11

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