[유병규-16주차 알고리즘 스터디]

유병규_16주차/[BOJ-1727] 커플 만들기.java

@@ -0,0 +1,71 @@
+import java.io.*;
+import java.util.*;
+
+public class Main {
+    public static void main(String[] args) throws IOException {
+        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
+        StringTokenizer st = new StringTokenizer(br.readLine());
+
+        int n = Integer.parseInt(st.nextToken());
+        int m = Integer.parseInt(st.nextToken());
+
+        int[] men = new int[n + 1];
+        int[] women = new int[m + 1];
+
+        st = new StringTokenizer(br.readLine());
+        for (int i=1; i<=n; i++) {
+            men[i] = Integer.parseInt(st.nextToken());
+        }
+
+        st = new StringTokenizer(br.readLine());
+        for (int i=1; i<=m; i++) {
+            women[i] = Integer.parseInt(st.nextToken());
+        }
+
+        // 정렬
+        Arrays.sort(men);
+        Arrays.sort(women);
+
+        // 작은 그룹과 큰 그룹 결정
+        int[] small, large;
+        int smallSize, largeSize;
+
+        if (n <= m) {
+            small = men;
+            large = women;
+            smallSize = n;
+            largeSize = m;
+        } else {
+            small = women;
+            large = men;
+            smallSize = m;
+            largeSize = n;
+        }
+
+        // DP 배열 초기화
+        long[][] dp = new long[smallSize+1][largeSize+1];
+
+        // 초기값 설정
+        for (int i=0; i<=smallSize; i++) {
+            for (int j=0; j<i; j++) {
+                dp[i][j] = Long.MAX_VALUE;
+            }
+        }
+
+        // DP 계산
+        for (int i=1; i<=smallSize; i++) {
+            for (int j=i; j<=largeSize; j++) {
+                if (j == i) {
+                    dp[i][j] = dp[i-1][j-1] + Math.abs(small[i] - large[j]);
+                } else {
+                    dp[i][j] = Math.min(
+                        dp[i][j-1],  // j번째 사람을 선택하지 않는 경우
+                        dp[i-1][j-1] + Math.abs(small[i] - large[j])  // j번째 사람을 선택하는 경우
+                    );
+                }
+            }
+        }
+
+        System.out.println(dp[smallSize][largeSize]);
+    }
+}