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using System.IO;
using System.Text;
using System.Linq;
using System.Reflection.PortableExecutable;
using System.Security.Cryptography;
namespace 연습장
{
internal class Program
{
static StringBuilder sb = new StringBuilder();
static void Main(string[] args)
{
using var reader = new StreamReader(Console.OpenStandardInput());
using var print = new StreamWriter(Console.OpenStandardOutput());
_1406_boj boj = new _1406_boj();
boj.boj_1406();
}
}
public class Node
{
public char data;
public Node link = null;
}
internal class _1406_boj
{
public static Node head = null;
public StringBuilder sb = new StringBuilder();
public void boj_1406()
{
string input = Console.ReadLine();
for (int i =0; i < input.Length; i++)
{
make_node(input[i]);
}
make_node('C');
print_node(head);
int cnt = int.Parse(Console.ReadLine());
for (int i = 0; i < cnt; i++)
{
string input2 = Console.ReadLine();
switch(input2[0])
{
case 'P':
insert_node(input2[2]);
break;
case 'L':
move_left();
break;
case 'D':
move_right();
break;
case 'B':
delete_node();
break;
}
print_node(head);
}
}
public void make_node(char data)
{
Node node = new Node();
node.data = data;
if (head == null)
{
head = node;
return;
}
Node current = head;
while (current.link != null)
current = current.link;
current.link = node;
}
public void print_node(Node start)
{
if (head == null)
return;
if (start.data != 'C')
sb.Append(start.data);
while (start.link != null)
{
start = start.link;
if (start.data != 'C')
sb.Append(start.data);
}
Console.WriteLine(sb);
sb.Clear();
}
public void insert_node(char insert_data)
{
Node node = new Node();
node.data = insert_data;
if (head.data == 'C')
{
node.link = head;
head = node;
}
Node current = head;
while (current.link != null)
{
Node pre = current;
current = current.link;
if (current.data == 'C')
{
pre.link = node;
node.link = current;
}
}
}
public void move_left()
{
Node current = head;
Node node = new Node();
node.data = 'C';
if (head.data == 'C')
{
return;
}
if (head.link.data == 'C')
{
node.link = head;
head.link = head.link.link;
head = node;
return;
}
while (current.link != null)
{
Node pre = current;
current = current.link;
if (current.link.data == 'C')
{
node.link = current;
pre.link = node;
if (current.link.link == null)
current.link = null;
else
current.link = current.link.link;
return;
}
}
}
public void move_right()
{
Node current = head;
Node node = new Node();
node.data = 'C';
if (head.data == 'C')
{
head = head.link;
node.link = head.link;
head.link = node;
current.link = null;
return;
}
while (current.link != null)
{
Node pre = current;
current = current.link;
if (current.data == 'C')
{
if (current.link == null)
return;
else
{
pre.link = current.link;
node.link = current.link.link;
current.link.link = node;
current.link = null;
return;
}
}
}
}
public void delete_node()
{
Node current = head;
if (head.data == 'C')
return;
while (current.link != null)
{
Node pre = current;
current = current.link;
if (current.data == 'C')
{
if (pre == head)
{
pre.link = null;
head = current;
return;
}
pre.link = current.link;
current.link = null;
pre.data = 'C';
return;
}
}
}
}
}
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cs |
시간초과가 계속 뜬다... 다른 방법을 찾아봐야겠지?