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Define a function that when passed an ArrayList of ArrayList of Integer objects, returns the sum of all items in the list. Return 0 if the list is null. Ignore any null sub-lists, or any null objects inside non-null sub-lists. sum2DHandleNull([[10, 70], [20, 90]]) → 190 sum2DHandleNull([[10, 70, 20], [90]]) → 190 sum2DHandleNull([[10, 70, 20, 90]]) → 190 ...Save, Compile, Run (ctrl-enter) |
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Difficulty: 4 Post-solution available
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