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1R/2016 09 17: Difference between revisions

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= 코드 =
= 코드 =
== 15이원준 ==
== 15이원준 ==
 
#include<iostream>
#include<algorithm>
#include<string>
#include<vector>
#include<cstring>
using namespace std;
char f[1010] = {0,}, s[1010] = {0,},ans[1010] = {0,};
int len[1010][1010] = { 0, };
int main(){
  cin>> f >> s;
  int x, y;
  x = strlen(f);
  y = strlen(s);
  for(int i = 1; i<=x; i++){
    for(int j = 1; j<=y; j++){
      if(f[i-1] == s[j-1]){
        len[i][j] = len[i-1][j-1] + 1;
      }
      else{
        len[i][j] = max(len[i-1][j], len[i][j-1]);
      }
    }
  }
  int num = len[x][y];
  cout<<num<<endl;
  ans[num] = '\0';
num--;
int i = x, j = y;
while (i >= 1 && j >= 1 && num >= 0) {
if (f[i-1] == s[j - 1]) {
//cout<< ">";
//cout<< i << " " << j << endl;
ans[num] = f[i - 1];
num--;
i--;
j--;
}
else {
//cout<< i << " " << j << endl;
if (len[i - 1][j] >= len[i][j - 1]) {
i--;
}
else {
j--;
}
}
}
cout << ans << endl;
}
== 박인서 ==
== 박인서 ==
  #include <iostream>
  #include <iostream>
Line 16: Line 66:
  #include <vector>
  #include <vector>
   
   
  int lcs[1001][1001] = { 0, };
  int lcs[1001][1001] = { 0, };
  char len1[1001] = { 0, }, len2[1001] = { 0, };
  char len1[1001] = { 0, }, len2[1001] = { 0, };
   
   
  int main()
  int main()
Line 30: Line 80:
  for (int j = 1; j <= m; j++)
  for (int j = 1; j <= m; j++)
  {
  {
  if (len1[i - 1] == len2[j - 1])
  if (len1[i - 1] == len2[j - 1])
  lcs[i][j] = lcs[i - 1][j - 1] + 1;
  lcs[i][j] = lcs[i - 1][j - 1] + 1;
  else
  else
  lcs[i][j] = std::max(lcs[i][j - 1], lcs[i - 1][j]);
  lcs[i][j] = std::max(lcs[i][j - 1], lcs[i - 1][j]);
  }
  }
  }
  }
   
   
  //lcs 길이 출력
  //lcs 길이 출력
  std::cout << lcs[n][m] << std::endl;
  std::cout << lcs[n][m] << std::endl;
  std::vector<char> res;
  std::vector<char> res;
  int x = n - 1, y = m - 1;
  int x = n - 1, y = m - 1;
Line 45: Line 95:
  while (x >= 0 && y >= 0)
  while (x >= 0 && y >= 0)
  {
  {
  if (len1[x] == len2[y]) {
  if (len1[x] == len2[y]) {
  res.push_back(len1[x]);
  res.push_back(len1[x]);
  x--, y--;
  x--, y--;
  }
  }
  else lcs[x + 1][y] >= lcs[x][y + 1] ? y-- : x--;
  else lcs[x + 1][y] >= lcs[x][y + 1] ? y-- : x--;
  }
  }
 
 
  //lcs 출력
  //lcs 출력
  std::reverse(res.begin(), res.end());
  std::reverse(res.begin(), res.end());
  for (int i = 0; i < res.size(); i++) std::cout << res[i];
  for (int i = 0; i < res.size(); i++) std::cout << res[i];
 
 
  return 0;
  return 0;
Line 65: Line 115:


== 박인서 ==
== 박인서 ==
* [https://ko.wikipedia.org/wiki/%EC%B5%9C%EC%9E%A5_%EA%B3%B5%ED%86%B5_%EB%B6%80%EB%B6%84_%EC%88%98%EC%97%B4|위키피디아 설명]대신합니다.
* [https://ko.wikipedia.org/wiki/%EC%B5%9C%EC%9E%A5_%EA%B3%B5%ED%86%B5_%EB%B6%80%EB%B6%84_%EC%88%98%EC%97%B4|위키피디아 설명]으로 대신합니다.


== 곽정흠 ==
== 곽정흠 ==

Latest revision as of 14:46, 26 March 2026

오늘의 문제

참가자

  • 박인서

코드

15이원준

#include<iostream>
#include<algorithm>
#include<string>
#include<vector>
#include<cstring>
using namespace std;
char f[1010] = {0,}, s[1010] = {0,},ans[1010] = {0,};
int len[1010][1010] = { 0, };

int main(){
  cin>> f >> s;
  int x, y;
  x = strlen(f);
  y = strlen(s);
  for(int i = 1; i<=x; i++){
    for(int j = 1; j<=y; j++){
      if(f[i-1] == s[j-1]){
        len[i][j] = len[i-1][j-1] + 1;
      }
      else{
        len[i][j] = max(len[i-1][j], len[i][j-1]);
      }
    }
  }
  int num = len[x][y];
  cout<<num<<endl;
  ans[num] = '\0';
	num--;
	int i = x, j = y;
	while (i >= 1 && j >= 1 && num >= 0) {
		if (f[i-1] == s[j - 1]) {
			//cout<< ">";
			//cout<< i << " " << j << endl;
			ans[num] = f[i - 1];
			num--;
			i--;
			j--;
		}
		else {
			//cout<< i << " " << j << endl;
			if (len[i - 1][j] >= len[i][j - 1]) {
				i--;
			}
			else {
				j--;
			}
		}

	}
	cout << ans << endl;
}

박인서

#include <iostream>
#include <cstring>
#include <algorithm>
#include <vector>

int lcs[1001][1001] = { 0, };
char len1[1001] = { 0, }, len2[1001] = { 0, };

int main()
{
	//입력
	std::cin >> len1 >> len2;
	
	//lcs 탐색
	int n = strlen(len1), m = strlen(len2);
	for (int i = 1; i <= n; i++)
	{
		for (int j = 1; j <= m; j++)
		{
			if (len1[i - 1] == len2[j - 1])
				lcs[i][j] = lcs[i - 1][j - 1] + 1;
			else
				lcs[i][j] = std::max(lcs[i][j - 1], lcs[i - 1][j]);
		}
	}

	//lcs 길이 출력
	std::cout << lcs[n][m] << std::endl;
	std::vector<char> res;
	int x = n - 1, y = m - 1;
	
	//경로 되추적
	while (x >= 0 && y >= 0)
	{
		if (len1[x] == len2[y]) {
			res.push_back(len1[x]);
			x--, y--;
		}
		else lcs[x + 1][y] >= lcs[x][y + 1] ? y-- : x--;
	}
	
	//lcs 출력
	std::reverse(res.begin(), res.end());
	for (int i = 0; i < res.size(); i++) std::cout << res[i];
	
	return 0;
}

곽정흠

아이디어

15이원준

박인서

곽정흠