code-squad · honux77 · Feb 12, 2020 · Feb 3, 2020 · Feb 3, 2020 · Feb 4, 2020
diff --git a/200211/102092/groupby1.sql b/200211/102092/groupby1.sql
@@ -0,0 +1,5 @@
+/*
+https://programmers.co.kr/learn/courses/30/lessons/59040
+*/
+
+SELECT ANIMAL_TYPE,COUNT(ANIMAL_TYPE) FROM ANIMAL_INS GROUP BY ANIMAL_TYPE ORDER BY ANIMAL_TYPE;
diff --git a/200211/102092/workoutClothes.java b/200211/102092/workoutClothes.java
@@ -0,0 +1,85 @@
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+/*
+https://programmers.co.kr/learn/courses/30/lessons/42862
+
+1. Greedy 문제
+2. 다중 for문을 돌려야하나?
+3. 정확히 어떤 컨셉의 문제인지 빠르게 캐치가 안됨.
+4.
+ */
+
+class Solution {
+
+    public int solution(int n, int[] lost, int[] reserve) {
+        int result = n;
+        result -= lost.length;
+
+        for (int i = 0; i < lost.length; i++) {
+            for (int j = 0; j < reserve.length; j++) {
+                // 여분을 가져왔는데, 잃어버렸을 경우, 그러면 빌려줄 수 없으니까.
+                if (lost[i] == reserve[j]) {
+                    result++;
+                    lost[i] = -1;
+                    reserve[j] = -1;
+                    break;
+                }
+            }
+
+        }
+
+        for (int i = 0; i < lost.length; i++) {
+            for (int j = 0; j < reserve.length; j++) {
+                if (lost[i] == reserve[j] - 1 || lost[i] == reserve[j] + 1) {
+                    result++;
+                    reserve[j] = -1;
+                    break;
+                }
+            }
+
+        }
+        return result;
+    }
+}
+
+public class workoutClothes {
+
+    Solution solution;
+
+    @BeforeEach
+    public void 객체생성() {
+        solution = new Solution();
+    }
+
+    @Test
+    public void 테스트1() {
+        int n = 5;
+        int[] lost = new int[] { 2, 4 };
+        int[] reserve = new int[] { 1, 3, 5 };
+        int result = 5;
+        assertEquals(solution.solution(n, lost, reserve), result);
+    }
+
+    @Test
+    public void 테스트2() {
+        int n = 5;
+        int[] lost = new int[] { 2, 4 };
+        int[] reserve = new int[] { 3 };
+        int result = 4;
+
+        assertEquals(solution.solution(n, lost, reserve), result);
+    }
+
+    @Test
+    public void 테스트3() {
+        int n = 3;
+        int[] lost = new int[] { 3 };
+        int[] reserve = new int[] { 1 };
+        int result = 2;
+
+        assertEquals(solution.solution(n, lost, reserve), result);
+    }
+}