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simona1@sfusd.edu > sumOf3s
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Given an array of ints, return the sum of all the 3's in the array. The array may be of any length including 0.


sumOf3s([1, 2, 3, 1, 2]) → 3
sumOf3s([10, 10, 10, 10, 10]) → 0
sumOf3s([]) → 0

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public int sumOf3s(int [] nums){ }

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