Code Example Ch 08-1
Assume an int array, values, that is filled to capacity with the following values:
|18 | 9 | 4 | 12 | 2 | 6 | 8 |
-Refer to Code Example Ch 08-1: Which of the following loops would adequately add 1 to each element stored in values?
A) for (j=1; j

Question

Code Example Ch 08-1
Assume an int array, values, that is filled to capacity with the following values:
|18 | 9 | 4 | 12 | 2 | 6 | 8 | 
-Refer to Code Example Ch 08-1: Which of the following loops would adequately add 1 to each element stored in values?
A) for (j=1; j<values.length; j++) values[j]++;
B) for (j=0; j<values.length; j++) values[j]++;
C) for (j=0; j<=values.length; j++) values[j]++;
D) for (j=0; j<values.length-1; j++) values[j]++;
E) for (j=1; j<values.length-1; j++) values[j]++;

Quizplus · Accepted Answer

Option B is the best choice as it starts the loop at the first element (index 0) and goes through every element in the array up to the last element (index values.length-1). It then adds 1 to each element using the post-increment operator (++). Option A starts the loop at index 1, thus missing the first element. Option C uses the less than or equal to operator, which will cause an ArrayIndexOutOfBoundsException error since the loop will try to access one element past the end of the array. Option D starts the loop at index 0 but only goes through every element up to the second to last element, thus missing the last element. Option E starts the loop at index 1, thus missing the first element, and also only goes through every element up to the second to last element, thus missing the last element.