Array Creation and Access
Which of the following creates an array of 10 doubles called prices?
What is "double[] prices = new double[10];"
Given the following code segment (which is identical to the method above) what will be returned when you execute: getIndexOfLastElementSmallerThanTarget(values,-13);
private int[ ] values = {-20, -15, 2, 8, 16, 33};
public static int getIndexOfLastElementSmallerThanTarget(int[ ] values, int compare)
{ for (int i = values.length - 1; i >=0; i--) { if (values[i] < compare) return i; } return -1; // to show none found
1
What are some of the reasons you would use an enhanced for-each loop instead of a for loop?
I: If you wish to access every element of an array.
II: If you wish to modify elements of the array.
III: If you wish to refer to elements through a variable name instead of an array index.
I and III only.
How do we check if the space at the current index isn’t null?
if (spaces[index] != null)
Max level jump spell at town hall 12
level 3
Which index is for the last element of an array called highScores?
What is highScores.length - 1
Given the following code segment (which is identical to the method above) what will be returned when you execute: getIndexOfLastElementSmallerThanTarget(values, 7);
int[ ] values = {-20, -15, 2, 8, 16, 33};
public static int getIndexOfLastElementSmallerThanTarget(int[] values, int compare)
{ for (int i = values.length; i >=0; i--) { if (values[i] < compare) return i; } return -1; // to show none found
}
out of bounds error
What is the output of the following code segment?
int[ ] numbers = {44, 33, 22, 11};
for (int num : numbers)
{ num *= 2;
}
for (int num : numbers)
{ System.out.print(num + " ");
}
44 33 22 11
Which loop should you use to solve this problem?
while
Who was the MLB national league MVP in 1913
Jake Daubert
Consider the following method. Given an array initialized to {4, 10, 15}, which of the following represents the contents of the array after a call to mystery(array, 2)?
public void mystery(int[] a, int i)
{ a[i] = a[i-1] * 2;
}
What is [4, 10, 20]
Given the following values of a and the method doubleLast what will the values of a be after you execute: doubleLast()?
private int[ ] a = {-20, -15, 2, 8, 16, 33};
public void doubleLast()
{
for (int i = a.length / 2; i < a.length; i++) { a[i] = a[i] * 2; }
}
{-20, -15, 2, 16, 32, 66}
Given that array is an array of integers and target is an integer value, which of the following best describes the conditions under which the following code segment will return true?
boolean temp = false;
for (int val : array)
{ temp = ( target == val );
}
return temp;
Whenever the last element in array is equal to target.
Which of the following correctly declares and creates the array to return?
int[] retArray = new int[num];
Translate:
كيف تبدو حالة الطقس اليوم؟
How does the weather look today?
Which of the following code segments, appearing in the same class as the mystery method, will result in array2 having the contents {5, 10, 20}?
public int[] mystery(int[] a, int i, int value)
{ a[i + 1] = a[i] + value; return a;
}
int[] array1 = {5, 10, 15};
int[] array2 = mystery(array1, 1, 10);
Given the following values of a and the method mystery what will the values of a be after you execute: mystery()?
private int[ ] a = {-20, -15, 2, 8, 16, 33};
public void mystery()
{
for (int i = 0; i < a.length/2; i+=2) { a[i] = a[i] * 2; }
}
{-40, -15, 4, 8, 16, 33}
Which of the following correctly retrieves the name of a “Horse” object from the “spaces” array?
spaces[index].getName();
Which loop would be best for this problem?
for
How much head shot damage does a legendary bolt action sniper do in fortnite?
290
Given the following code segment, which of the following will cause an infinite loop? Assume that temp is an int variable initialized to be greater than zero and that a is an array of integers.
for ( int k = 0; k < a.length; k++ )
{ while ( a[ k ] < temp ) { a[ k ] *= 2; }
}
Whenever a includes a value that is less than or equal to zero.
Which of the following loop headers will cause an ArrayIndexOutOfBounds error while traversing the array scores?
for (int i = 0; i <= scores.length; i++)
for (int i = scores.length - 1; i >= 0; i++)
What is the best way to compare two strings for equality?
str.equals(anotherString);
Which is the correct code for changing the current value to the negative of the limit?
samples[i] = -limit;
The third planet from the sun
What is earth