Partition a Linked List around a value x
Problem
Write code to partition a linked list around a value x, such that all nodes less than x come before all nodes larger than x or equal to x
How to Solve
First, I prepare two nodes that are beforeStart and afterStart. These nodes can be define the following that.
- beforeStart: connect nodes less than x
- afterStart: connect nodes larger than x or equal to x
So, I can partition each node into prepared nodes by traversing given linked list. After that, by merging tow nodes, we can return node we want to ask.
