[Combination] baekjoon-11050

Author: Seogeurim

README.md

@@ -61,4 +61,12 @@
 |  #  |   ☆    | Problem                                                                                                             | Note                      |
 | :-: | :----: | :------------------------------------------------------------------------------------------------------------------ | :------------------------ |
 | 01  |     | [GCD Example](https://github.com/Seogeurim/Algorithm-practice/blob/master/src/GCD/GCDTest.java) |      |
-| 02  |     | [Baekjoon-14476 최대공약수 하나 빼기](https://github.com/Seogeurim/Algorithm-practice/tree/master/src/GCD/P14476)   | 누적합                 |
+| 02  |     | [Baekjoon-14476 최대공약수 하나 빼기](https://github.com/Seogeurim/Algorithm-practice/tree/master/src/GCD/P14476)   | 누적합                 |
+
+## Combinatorics
+
+### Combination
+
+|  #  |   ☆    | Problem                                                                                                             | Note                      |
+| :-: | :----: | :------------------------------------------------------------------------------------------------------------------ | :------------------------ |
+| 01  |     | [Baekjoon-11050 이항 계수 1](https://github.com/Seogeurim/Algorithm-practice/blob/master/src/Combination/P11050) |      |

src/Combination/P11050/Main.java

@@ -0,0 +1,26 @@
+package Combination.P11050;
+
+import java.io.BufferedReader;
+import java.io.InputStreamReader;
+import java.util.StringTokenizer;
+
+public class Main {
+
+    static int N,K;
+
+    public static void main(String[] args) throws Exception {
+        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
+        StringTokenizer st = new StringTokenizer(br.readLine());
+
+        N = Integer.parseInt(st.nextToken());
+        K = Integer.parseInt(st.nextToken());
+
+        System.out.println(combination(N, K));
+    }
+
+    static int combination(int n, int k) {
+        if (k == 0 || n == k)
+            return 1;
+        return combination(n-1, k-1) + combination(n-1, k);
+    }
+}