23-yuyu0830

23-yuyu0830

yuyu0830/LCS/9252.cpp

@@ -0,0 +1,36 @@
+#include <iostream>
+#include <string>
+
+using namespace std;
+
+int arr[1001][1001] = {0, };
+string str1, str2;
+
+void print(int x, int y) {
+    if (!arr[x][y]) return;
+
+    if (str1[x - 1] == str2[y - 1]) {
+        print(x - 1, y - 1);
+        printf("%c", str1[x - 1]);
+        return;
+    }
+
+    arr[x - 1][y] > arr[x][y - 1] ? print(x - 1, y) : print(x, y - 1);
+}
+
+int main() {
+    cin >> str1 >> str2;
+
+    int len1 = str1.size(), len2 = str2.size();
+
+    for (int i = 0; i <= len1; i++) {
+        for (int j = 0; j <= len2; j++) {
+            if (!i || !j) arr[i][j] = 0;
+            else if (str1[i - 1] == str2[j - 1]) arr[i][j] = arr[i - 1][j - 1] + 1;
+            else arr[i][j] = max(arr[i][j - 1], arr[i - 1][j]);
+        }
+    }
+
+    printf("%d\n", arr[len1][len2]);
+    print(len1, len2);
+}

yuyu0830/README.md

@@ -23,4 +23,5 @@
 | 19차시 | 2024.07.12 |  재귀  | [우수마을](https://www.acmicpc.net/problem/1949)  | - |
 | 20차시 | 2024.07.22 |  LIS  | [가장 긴 증가하는 부분 수열 5](https://www.acmicpc.net/problem/14003)  | - |
 | 21차시 | 2024.07.23 |  수학  | [1의 개수 세기](https://www.acmicpc.net/problem/9527)  | - |
+| 23차시 | 2024.08.05 |  LCS  | [LCS 2](https://www.acmicpc.net/problem/9252)  | - |
 ---