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orion.a.smith@gmail.com apcsa-lists > apcsaListAddBeginning
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Given an ArrayList of Integers called lst, add a new element num at the beginning of the ArrayList. Return the ArrayList as output. 

HINT
The add method with two parameters uses the first parameter as the new index.

apcsaListAddBeginning([3, 4, 5], 2) → [2, 3, 4, 5]
apcsaListAddBeginning([5, 0, 3], 0) → [0, 5, 0, 3]
apcsaListAddBeginning([3, 5, 6], 1) → [1, 3, 5, 6]

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public ArrayList<Integer> apcsaListAddBeginning(ArrayList<Integer> lst, int num) { }

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