Question 100.05 pts

A loop is being used to find the lowest value in a double array named numbers. Which of the following statements performs a useful initialization of the accumulator?

double lowestValue = 0;

double lowestValue = numbers;

double lowestValue = numbers[0];

double lowestValue; // no initialization needed

Any of the above.

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Question 110.05 pts

The following bit of code is attempting to find the sum of all the elements in the array 'codes'. One line contains a logic error. Which line is it? long[] codes = ...; // Assume the array has been filled with values ... long sum = 0; // line 1 for ( int i = 1; i < codes.length; i++ ) { // line 2

sum = sum + codes[i]; // line 3

}

line 1

line 2

line 3

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Question 120.05 pts

Which of the following is true about a siftingoperation?

The operation may produce more than one result.

The operation may produce no results.

The search must continue even after a match is found; the entire collection must be examined.

All of the above.

None of the above.

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Question 130.05 pts

The following bit of code is attempting to find the average number of characters in all of the Strings in a String array. One line has a syntax error. Which line is it? String[] names = ... // Assume the array has been filled with values ... double averageLength = 0; // line 1 int i; for (i = 0; i < names.length(); i++ ) { // line 2

averageLength += names[i].length(); // line 3

} averageLength = averageLength / i; // line 4

line 1

line 2

line 3

line 4

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Question 140.05 pts

The following bit of code is attempting to find the x-coordinate of the Point that is farthest to the right in the x-y plane in the array 'points'. One line contains an error. Which line is it? Point[] points = ... // Assume the array has been filled with Point object references ... double xMax = points[0].getX(); // line 1 for ( int i = 1; i < points.length; i++ ) { // line 2

if ( points[i].getX() > xMax ) {// line 3

xMax = points[i]; // line 4

}

}

line 2

line 3

line 4