If arr[] contains only positive integer values, what does this function do? public int guessWhat( int arr[] ){ int x= 0; for( int i = 0; i < arr.length; i++ ) x = x < arr[i] ? arr[i] : x; return x;}
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Returns the index of the highest
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Returns true/false if there are any elements that repeat in the array
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Returns how many even numbers are in the array
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Returns the highest element in the array
The ternary operator x = x < arr[i] ? arr[i] : x compares current x with each array element. If arr[i] is larger than x, x becomes arr[i]; otherwise x stays the same. After iterating through all elements, x holds the maximum value found in the array.
To answer this question, let's go through each option to understand why it is correct or incorrect:
Option A) Returns the index of the highest - This option is incorrect because the given function does not return any index values. It only returns the highest element itself.
Option B) Returns true/false if there are any elements that repeat in the array - This option is incorrect because the given function does not check for repeated elements in the array. It only finds the highest element.
Option C) Returns how many even numbers are in the array - This option is incorrect because the given function does not count the number of even numbers in the array. It only finds the highest element.
Option D) Returns the highest element in the array - This option is correct because the given function iterates through the array and updates the value of variable 'x' to be the highest element found in the array. Finally, it returns the value of 'x', which represents the highest element in the array.
The correct answer is D. This option is correct because the given function returns the highest element in the array.