N과M(6) 1H

Author: dlwldn30

week3/.idea/.gitignore

@@ -0,0 +1,49 @@
+package N과M_6.dlwldn30;
+
+import java.io.*;
+import java.util.*;
+
+public class Main {
+    static int N, M;
+    static int[] arr;
+    static List<Integer> output = new ArrayList<>();
+    static StringBuilder sb = new StringBuilder();
+    public static void main(String[] args) throws IOException {
+        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
+
+        // 입력
+        StringTokenizer st = new StringTokenizer(br.readLine());
+        N = Integer.parseInt(st.nextToken());
+        M = Integer.parseInt(st.nextToken());
+
+        arr = new int[N];
+        st = new StringTokenizer(br.readLine());
+        for (int i = 0; i < N; i++) {
+            arr[i] = Integer.parseInt(st.nextToken());
+        }
+
+        Arrays.sort(arr); // 사전순 출력을 위해 정렬
+
+        solve(0, 0);
+
+        System.out.print(sb);
+    }
+
+    static void solve(int start, int depth) {
+        if (depth == M) {
+            for (int num : output) {
+                sb.append(num).append(' ');
+            }
+            sb.append('\n');
+            return;
+        }
+
+        for (int i = start; i < N; i++) {
+            output.add(arr[i]);
+            solve(i + 1, depth + 1);
+            output.remove(output.size() - 1);
+        }
+    }
+}
+
+