1406번: 에디터

#include <iostream>

#include <list>

#include <string>

using namespace std;

int main()

{

list<char> word;

list<char>::iterator cursor, x;

char a[100001], command[4];

int n;

cin >> a >> n;

for (int i = 0; a[i] != '\0'; ++i)

word.push_back(a[i]);

cursor = word.end();

cin.ignore();

for (int i = 0; i < n; ++i)

{

cin.getline(command, 4);

if (command[0] == 'L')

(cursor != word.begin()) ? --cursor : cursor ;

else if (command[0] == 'D')

(cursor == word.end()) ? cursor : ++cursor;

else if (command[0] == 'B')

{

if (cursor != word.begin())

{

x = cursor;

--x;

word.erase(x);

}

}

else if (command[0] == 'P')

word.insert(cursor, command[2]);

}

for (list<char>::iterator i = word.begin(); i != word.end(); ++i)

cout << *i;

}