week8_gist2.txt

Add Linked Lists of Numbers

You have two numbers represented by a linked list, where each node contains a single digit. The digits are stored in reverse order, such that the 1's digit is at the head of the list. Write a function that adds the two numbers and returns the sum as a linked list.

Ex:

438 + 123 = 561
[ 8 ] -> [ 3 ] -> [ 4 ]
+
[ 3 ] -> [ 2 ] -> [ 1 ]
=
[ 1 ] -> [ 6 ] -> [ 5 ]

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