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jgreenawalt@ccboe.com initials > halfMax
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Given an array of ints, return a double that represents half of the largest number. If the given array is empty, return -1.0;


halfMax([2, 4, 7, 10]) → 5.0
halfMax([11, 4, 7, 11]) → 5.5
halfMax([]) → -1.0

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public double halfMax(int [] nums){ }

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