Goldman Sachs Interview Question: How to remove a node from a s... | Glassdoor

Interview Question

Software Engineer Interview New York, NY

How to remove a node from a singly-linked list when only

  given the pointer to the node
programming, c, pointers

Interview Answer

6 Answers


You have to use some pointer/memory trickery

Interview Candidate on Jul 31, 2010
12 =
temporaryNode =
delete = temporaryNode

jobseeker on Aug 31, 2010

The post by "jobseeker" assumes that we know the node BEFORE the node to be deleted. This assumption is not consistent with the problem definition, but makes it solvable.

Milly on Oct 21, 2010

Milly, jobseeker's assumption is reasonable, we should not delete the node before removing it from the list (if it was created by the list)

Anonymous on Oct 25, 2010

Milly: jobseeker is right in that you don't delete the "node to be deleted". You delete the node that FOLLOWS the "node to be deleted", only after swapping the values of the two.

anon on Mar 17, 2011

node ->val=node->next->val;
     node ->next=node->next->next;

David Dhas on Mar 7, 2016

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