Advertisement
Not a member of Pastebin yet?
Sign Up,
it unlocks many cool features!
- using System;
- using System.Linq;
- class Link
- {
- public int Value { get; private set; }
- public Link Left { get; private set; }
- public Link Right { get; private set; }
- public Link(Link end, int x)
- {
- this.Value = x;
- this.Left = end;
- this.Right = null;
- if (end != null)
- {
- end.Right = this;
- }
- }
- public static void Detach(Link x)
- {
- if (x.Left != null)
- {
- x.Left.Right = null;
- }
- if (x.Right != null)
- {
- x.Right.Left = null;
- }
- x.Left = null;
- x.Right = null;
- }
- public static void Attach(Link l, Link r)
- {
- if (l == r)
- {
- return;
- }
- l.Right = r;
- r.Left = l;
- }
- }
- class Program
- {
- static void Main()
- {
- int n = int.Parse(Console.ReadLine());
- var swaps = Console.ReadLine()
- .Split(' ')
- .Select(int.Parse)
- .ToArray();
- var links = new Link[n + 1];
- for (int i = 1; i <= n; ++i)
- {
- links[i] = new Link(links[i - 1], i);
- }
- var leftEnd = links[1];
- var rightEnd = links[n];
- foreach (int x in swaps)
- {
- var middle = links[x];
- var newRight = middle.Left;
- var newLeft = middle.Right;
- Link.Detach(middle);
- Link.Attach(rightEnd, middle);
- Link.Attach(middle, leftEnd);
- leftEnd = newLeft ?? middle;
- rightEnd = newRight ?? middle;
- }
- var numbers = new int[n];
- for (int i = 0; i < n; ++i)
- {
- numbers[i] = leftEnd.Value;
- leftEnd = leftEnd.Right;
- }
- Console.WriteLine(string.Join(" ", numbers));
- }
- }
Advertisement
Add Comment
Please, Sign In to add comment
Advertisement