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One of the difficult question was about solving a puzzle with good algorithm and coding it up as well. I don't recall the puzzle's name now, but the solution involved using linked list (circular), and writing some classes and methods. In the end, testing was also required for this solution.
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Software Development Engineer In Test (SDET)

Interviewed at Microsoft

4★
Nov 19, 2012

One of the difficult question was about solving a puzzle with good algorithm and coding it up as well. I don't recall the puzzle's name now, but the solution involved using linked list (circular), and writing some classes and methods. In the end, testing was also required for this solution.

Create a copy of a singly-linked list. Each node has a value and a next pointer, but also has a pointer to a random node: It can be null, or point to any other node in the list. The solution must take O(n) time and use O(1) space.
avatar

Software Development Engineer In Test (SDET)

Interviewed at Microsoft

4★
Nov 27, 2012

Create a copy of a singly-linked list. Each node has a value and a next pointer, but also has a pointer to a random node: It can be null, or point to any other node in the list. The solution must take O(n) time and use O(1) space.

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