[Exercise] Find the middle element of linked list in one Pass

Submitted by heartin on Sun, 05/08/2016 - 23:17

Problem:

Find the middle element of linked list in one Pass.

 

Approach:

You can use the runner technique.  

Two pointers can be used and both will be running at separate speeds. One runner pointer can go in two steps at a time and other pointer can go in one step at a time. Second one will always cover half the distance as that of the other. When one reaches the end, other will be be middle.

 

Solution:

Comment about your approach or share the github url for your solution. 

 

 

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