ICE1111 Revision

A function called buildRandom has to generate a list of 10,000 random floating point values and return these values in an array which is created inside the method itself. Which is the correct method header?

• float buildRandom()

• double* buildRandom()

• double buildRandom(double[] list)

• float[10000] buildRandom()

Assume that numbers  is an array of length 100 which has just been filled with 100 non-zero integer values. 

Assume that pos holds an integer value in the interval [0,98]. 

Which statement regarding the code fragment below is true?

int size = 100;
for(int i = pos; i < size-1; i++)
   numbers[i] = numbers[i+1];
size--;
 

• The maximum number of  assignments performed by the loop will be ninety eight. 

• The loop will move each array element numbers[i] to numbers[i+1]

• The fragment will reduce the number of integers the array numbers can hold 

• The maximum number of  assignments performed by the loop will be ninety nine.

Assume that the 5 x 5 two-dimensional array called table is used to hold integer values. Which statement below is true?

for(int i = 0; i<5; i++)
   for(int j=0; j<5; j++)
      table[j][i] = table[i][j];

• There is no change to the contents of the 2D array.

• Every value in the table is guaranteed to change. 

•  Some values in the table are guaranteed not to change.

• The nested loop contains a syntax error.

What does the nested loop below do?

Assume that the 10 x 10 two-dimensional array called table is used to hold integer values.

int sum = 0;
for(int i = 0; i<4; i++)
   for(int j=1; j<=5; j++)
      sum += table[i][j];

• Sums twenty five values in the array and stores result in sum

• Sums twenty  values in the array and stores result in sum

• Sums twelve values in the array and stores result in sum 

• Produces separate sums for each of the five constituent arrays of  table.

What elements does the array data contain after the for loop below has executed?

int data[5];

for (int i = 0; i < 5; i++)
   data[i] = 2 * i;

• 0, 2, 4, 6, 0

• 0, 2, 4, 6, 8 

• 0, 2, 4, 6, 8, 10 

• 2, 4, 6, 8, 10 

What is the effect of the code fragement below? You may assume that the array list has been properly declared and is completely filled with a set of non-zero integer values.

int list[10];
for(int i = 0; i < 10; i++)
   list[i] = list[i+1];

• The loop will sort the elements in the array into ascending order.

• All elements in list are moved "up one" towards the end of the array (i.e list[list.length-1]).

• All elements in list are incremented by one.

• Execution of the loop will cause a run-time error.

What is the effect of the code fragement below? You may assume that the array values has been properly declared and its size equals 10.

for(int i = 0; i <= 10 ; i++)
   printf("%d ", values[i]);

•  A syntax error will be reported at compile time 

•  Ten integer values will be displayed on the console screen

• Ten integer values will be displayed on the consle screen followed by a run-time exception message

• No integer values are displayed but a run-time exception message is displayed on the console screen 

What is the effect of the code fragement below? You may assume that the array list has been properly declared and is completely filled with a set of non-zero integer values.

int list[100];
for(int i = 0; i <= 100; i++)
   list[i] = 2 * list[i];
printf("Sucess!\n");

• The value of each element in the array will be doubled and the message "Success!" displayed.

• All elements in the list are doubled and then a run-time error occurs.

• The compiler will indicate a syntax error.

• A run-time error occurs as soon as the first element in the array has been modified.

What is the sum of the values stored in the array numbers after the loop below has executed?

int numbers[10];
for(int i = 1; i < 10; i++)
   numbers[i] = i % 2;

• 55 

• 5

• 4

• 6

What is the sum of the values stored in the array numbers after the loop below has executed?

int numbers[5];
for(int i = 1; i < 5; i++)
   numbers[i] = 2 + i * i;

• 38 

• 40 

• 50 

• 18