From 9a30986667a8ccc1a867fff77327710faa825496 Mon Sep 17 00:00:00 2001
From: wlsgud <wlsgudki@naver.com>
Date: Mon, 6 Jul 2020 20:33:03 +0900
Subject: [PATCH] 1-2 k-number

---
 .../Solution.java"                            | 30 ++++++++++++++++++-
 .../solution.js"                              | 20 +++++++++++++
 2 files changed, 49 insertions(+), 1 deletion(-)
 create mode 100644 "week1/2. K\353\262\210\354\247\270 \354\210\230/solution.js"

diff --git "a/week1/2. K\353\262\210\354\247\270 \354\210\230/Solution.java" "b/week1/2. K\353\262\210\354\247\270 \354\210\230/Solution.java"
index 1036e2c..028c0d4 100644
--- "a/week1/2. K\353\262\210\354\247\270 \354\210\230/Solution.java"	
+++ "b/week1/2. K\353\262\210\354\247\270 \354\210\230/Solution.java"	
@@ -1,11 +1,39 @@
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+
 /*
     2. K번째 수 
     https://programmers.co.kr/learn/courses/30/lessons/42748
 */
 class Solution {
 
+    public static void main(String[] args) {
+        Solution sol = new Solution();
+
+        int[] arr = { 1, 5, 2, 6, 3, 7, 4 };
+        int[][] commands = { { 2, 5, 3 }, { 4, 4, 1 }, { 1, 7, 3 } };
+
+        System.out.println(Arrays.toString(sol.solution(arr, commands)));
+    }
+
     public int[] solution(int[] array, int[][] commands) {
-        return null;
+
+        List<Integer> answer = new ArrayList<Integer>();
+
+        for (int[] command : commands) {
+
+            int startIndex = command[0] - 1;
+            int endIndex = command[1];
+            int pickIndex = command[2] - 1;
+
+            int[] commandCopy = Arrays.copyOfRange(array, startIndex, endIndex);
+            Arrays.sort(commandCopy);
+
+            answer.add(commandCopy[pickIndex]);
+        }
+
+        return answer.stream().mapToInt(i -> i).toArray();
     }
 
 }
diff --git "a/week1/2. K\353\262\210\354\247\270 \354\210\230/solution.js" "b/week1/2. K\353\262\210\354\247\270 \354\210\230/solution.js"
new file mode 100644
index 0000000..23548c7
--- /dev/null
+++ "b/week1/2. K\353\262\210\354\247\270 \354\210\230/solution.js"	
@@ -0,0 +1,20 @@
+function solution(array = [], commands = [[], []]) {
+  return commands.map((command) => {
+    const [startIndex, endIndex, pickIndex] = command;
+
+    return array.slice(startIndex - 1, endIndex).sort((a, b) => a - b)[
+      pickIndex - 1
+    ];
+  });
+}
+
+console.log(
+  solution(
+    [1, 5, 2, 6, 3, 7, 4],
+    [
+      [2, 5, 3],
+      [4, 4, 1],
+      [1, 7, 3],
+    ]
+  )
+);