Hey!
Thanks for checking my question out!
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10. If x is a sorted array of int values, which of the following shows a call to a method of the Arrays class that will determine if the value 7 exists in the array? (1 point)
a) int loc = java.util.Arrays.search(x, 7);
b) int loc = java.util.Arrays.binarySearch(x, 7);
c) int loc = java.util.Arrays.find(x, 7);
d) int loc = java.util.Arrays.locate(x, 7);
My Answer: B
Could someone please check my answer?
Thanks!
- Da Fash
Yes, your answer is correct. The correct option is b) int loc = java.util.Arrays.binarySearch(x, 7).
To understand why this is the correct option, let's analyze each answer choice:
a) int loc = java.util.Arrays.search(x, 7);
This is not a valid method of the Arrays class. The Arrays class in Java does not have a method called "search".
c) int loc = java.util.Arrays.find(x, 7);
Again, this is not a valid method of the Arrays class. The Arrays class in Java does not have a method called "find".
d) int loc = java.util.Arrays.locate(x, 7);
Once again, this is not a valid method of the Arrays class. The Arrays class in Java does not have a method called "locate".
b) int loc = java.util.Arrays.binarySearch(x, 7);
This is the correct method call. The Arrays class in Java provides a method called "binarySearch" that can be used to search for a value in a sorted array. It returns the index of the value if it is found, or a negative value if it is not found.
Therefore, the correct answer is b) int loc = java.util.Arrays.binarySearch(x, 7).
Well done in choosing the correct option!