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frew@mclean.com heap-1 > find2ndSmallestList
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Returns the second smallest element in the list. The list will have at least two unique elements.


find2ndSmallestList([2, 1, 2, 3, 4]) → 2
find2ndSmallestList([2, 0, 0]) → 2
find2ndSmallestList([1, 3, 5]) → 3

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public int find2ndSmallestList(ArrayList<Integer> nums) { }

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