Exam 1z0-808 topic 1 question 63 discussion

Actual exam question from Oracle's 1z0-808

Question #: 63
Topic #: 1

Given the code fragment:

And given the requirements:
1. Process all the elements of the array in the order of entry.
2. Process all the elements of the array in the reverse order of entry.
3. Process alternating elements of the array in the order of entry.
Which two statements are true? (Choose two.)

A. Requirements 1, 2, and 3 can be implemented by using the enhanced for loop.
B. Requirements 1, 2, and 3 can be implemented by using the standard for loop.
C. Requirements 2 and 3 CANNOT be implemented by using the standard for loop.
D. Requirement 1 can be implemented by using the enhanced for loop.
E. Requirement 3 CANNOT be implemented by using either the enhanced for loop or the standard for loop.

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Suggested Answer: BD 🗳️

by praroopgupta at Sept. 27, 2022, 12:16 p.m.

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iSnover

Highly Voted 2 years, 9 months ago

The Correct options are BD. I'm gonna explain: A -> Wrong, because enhanced for cannot read collections in reverse and alternately, it loops through each element and only in an ascending way. B -> Correct, with standard for you can go through elements of a collection in ascending, descending and alternating ways. C -> Wrong, you can loop backwards through an i-- in the third parameter of your for with the correct condition and you can also access collections alternately instead of putting "i++" in the third parameter of the standard for you, you can put the expression "i = i + 2" or any other number you want in place of 2. D -> Correct, an enhanced for processes all elements of an array in input form. E -> Wrong, you can do it alternately with a standard for as I explained in alternative C.

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