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Given a Node with a reference to a child, its next, its previous, and a variable for its value (1/2 tree, 1/2 doubly linked list structure), you have to find a way to flatten the structure. IE, create a doubly linked list but maintain the references to the children. 1 = 2 = 3 = 5 | | 6 = 7 8 | 9 (reference down is child and reference across is next) this above diagram becomes: 1 - 2 - 6 - 7- 9 - 3 - 5 - 8 but 2 still has child reference to 6 7 still has child reference to 9 5 still has child reference to 8
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Software Engineer Intern At Fog Creek

Interviewed at Glitch

3.3★
Dec 19, 2012

Given a Node with a reference to a child, its next, its previous, and a variable for its value (1/2 tree, 1/2 doubly linked list structure), you have to find a way to flatten the structure. IE, create a doubly linked list but maintain the references to the children. 1 = 2 = 3 = 5 | | 6 = 7 8 | 9 (reference down is child and reference across is next) this above diagram becomes: 1 - 2 - 6 - 7- 9 - 3 - 5 - 8 but 2 still has child reference to 6 7 still has child reference to 9 5 still has child reference to 8

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