Homework Answers
BEGIN PROGRAM mystery(int a, int b)
IF (b == 1)
RETURN a
END IF
ELSE
RETURN a + mystery(a, b-1)
END ELSE
END PROGRAM mystery
mystery(2, 3) //a = 2, b = 3.
b is not 1, so should return 2 + mystery(2, 2).
a = 2, b = 2.
b is not 1, so should return 2 + mystery(2, 1).
a = 2, b = 1.
b is 1, so should return 2.
So, going back mystery(2, 1) is replaced with 2, so, should
return 2 + 2 = 4.
going back mystery(2, 2) is replaced with 4, so, should return 2 +
4 = 6.
Therefore, the answer is: 6.
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Consider the following pseudo-code fragment. What is the value of mystery(2, 3)? BEGIN PROGRAM mystery(int a,...
5.43 (10 pts) What does the following program do? #include <stdio.h> 3 unsigned int mystery Cuns...
5.43 (10 pts) What does the following program do? #include <stdio.h> 3 unsigned int mystery Cuns igned int a, unsigned int b): // function prototype 5 int main(void) printf("%s". "Enter two positive integers: unsigned int x: I/ first integer unsigned int y: // second integer scanf("Su%u". &x, &y); "); 12 13 14 15 II Parameter b must be a positive integer 16 to prevent infinite recursion 7 unsigned int mystery Cuns igned int a, unsigned int b) 18 printf("The result...
Consider the following code segment: int[][] mystery = new int[3][3]; int counter = 0; while(counter <...
Consider the following code segment: int[][] mystery = new int[3][3]; int counter = 0; while(counter < mystery.length) { for(int col = 0; col < mystery[counter].length; col++) { if(counter == 0) { mystery[col][counter] = 1; } else if(counter == 1) { mystery[counter][col] = 2; } else { mystery[counter][counter] = 3; } } counter++; } What will the value of each element in mystery be after the execution of the code segment? a) {{1, 0, 0} {2, 2, 2} {1, 0, 3}}...
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3. Consider the mystery method given. public static int mystery ( int n) [ if (n == 0 ) { return 1; How do we get the values for recurse? else if (n%2 == 0 ) { int recurse = mystery ( n - 1); int result = recurse + n; return result; since n =5, we go to the else statement and do int recurse = mystery(5-1) which equals 4? why is 3 written? else { int recurse =...
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Consider the following pseudo code. What are the possible outputs (.e., the complete output from each...
Consider the following pseudo code. What are the possible outputs (.e., the complete output from each execution run of this program)? Explain in less than 50 words. Note: keep in mind that fork) may fail in that case no child process is created int main(int arge, char argvt int X- int CwO; re - fork(); 15 tre > 0) X=S; else x-rc +2: printf(" \n", x); return 0;
Consider the following method: public static int mystery (int x, double y, char ch) { ...
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3) What are the final values of a, b, c in the following code fragment (1.5...
3) What are the final values of a, b, c in the following code fragment (1.5 point): int a = 6 , b = 127 , c; c = ( ++a ) + ( b -- ); Answer: 4) What are the final values of a, b, c in the following code fragment (1.5 point): int a = 6 , b = 127 , c; c = (a++) + ( -- b); Answer: 5) What is displayed by this poorly...
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Consider carefully the program fragment below: int items = 5; ... if (items/2 == 2.5) cout...
Consider carefully the program fragment below: int items = 5; ... if (items/2 == 2.5) cout << "items = 5\n"; else cout << "items != 5\n"; What is its output? Depends on the value of a at the time of execution of the if clause item=5 item != 5 None of the Above
5.43 (10 pts) What does the following program do? #include <stdio.h> 3 unsigned int mystery Cuns igned int a, unsigned int b): // function prototype 5 int main(void) printf("%s". "Enter two positive integers: unsigned int x: I/ first integer unsigned int y: // second integer scanf("Su%u". &x, &y); "); 12 13 14 15 II Parameter b must be a positive integer 16 to prevent infinite recursion 7 unsigned int mystery Cuns igned int a, unsigned int b) 18 printf("The result...
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Consider the following method: Linel: public static int mystery(int n) { Line2: if (n < 10) { ine3: return n; Line4: } else { Line5: int a = n/10; Line 6: int b = n % 10; Line 7: return mystery(a + b); Line 8: } Line 9: } What is the result of the following call? System.out.println(mystery(648)); 18 8 12
Consider the following pseudo code. What are the possible outputs (.e., the complete output from each execution run of this program)? Explain in less than 50 words. Note: keep in mind that fork) may fail in that case no child process is created int main(int arge, char argvt int X- int CwO; re - fork(); 15 tre > 0) X=S; else x-rc +2: printf(" \n", x); return 0;
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