Songju/week2

src/main/java/com/goorm/week2/day3/songju/Solution.java

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+package com.goorm.week2.day3.songju;
+
+import java.io.BufferedReader;
+import java.io.IOException;
+import java.io.InputStreamReader;
+
+/* 통증
+ * Day : 23.08.23
+ * Solving time : 18:22 ~ 18:28
+ */
+public class Solution {
+    private static final int[] items = {14, 7, 1};
+
+    public static void main(String[] args) {
+        try {
+            BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
+            System.out.println(solution(br));
+        } catch (IOException e) {
+            e.printStackTrace();
+        }
+    }
+
+    static int solution(BufferedReader br) throws IOException {
+        int N = Integer.parseInt(br.readLine());
+        int result = 0;
+        for (int i = 0; i < items.length; i++) {
+            result += N / items[i];
+            N %= items[i];
+            if (N == 0) break;
+        }
+        return result;
+    }
+}

src/main/java/com/goorm/week2/day4/songju/Solution.java

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+package com.goorm.week2.day4.songju;
+
+import java.io.BufferedReader;
+import java.io.IOException;
+import java.io.InputStreamReader;
+import java.util.StringTokenizer;
+
+/* 폭탄 구현하기(2)
+ * Day : 23.08.24
+ * Solving time : 14:50 ~ 15:30
+ */
+public class Solution {
+    private static int N, K;
+    private static char [][] board;
+    private static int [][] boom;
+    private static int result;
+    private static final int [] dx = {-1, 0, 0, 1};
+    private static final int [] dy = {0, -1, 1, 0};
+
+    public static void main(String[] args) {
+        try {
+            BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
+            System.out.println(solution(br));
+        } catch (IOException e) {
+            e.printStackTrace();
+        }
+    }
+
+    static int solution(BufferedReader br) throws IOException {
+        StringTokenizer st = new StringTokenizer(br.readLine(), " ");
+        N = Integer.parseInt(st.nextToken());
+        K = Integer.parseInt(st.nextToken());
+        board = new char[N][N];
+        boom = new int[N][N];
+        result = 0;
+        for(int i=0;i<N;i++){
+            board[i] = br.readLine().replaceAll(" ", "").toCharArray();
+        }
+
+        for(int i=0;i<K;i++){
+            st = new StringTokenizer(br.readLine(), " ");
+            int y = Integer.parseInt(st.nextToken())-1;
+            int x = Integer.parseInt(st.nextToken())-1;
+            dropBoom(x, y);
+        }
+
+        return result;
+    }
+
+    private static void dropBoom(int x, int y){
+        if(board[y][x] !='#')
+            boom[y][x] += (board[y][x] == '0' ? 1 : 2);
+        for(int i=0;i<4;i++){
+            int moveX = x + dx[i];
+            int moveY = y + dy[i];
+            if(moveX >= 0 && moveX<N && moveY>=0 && moveY<N&&board[moveY][moveX] != '#'){
+                boom[moveY][moveX] += (board[moveY][moveX] == '0' ? 1 : 2);
+                result = Math.max(result, Math.max(boom[moveY][moveX], boom[y][x]));
+            }
+        }
+    }
+}

src/test/java/com/goorm/week2/day3/songju/SolutionTest.java

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+package com.goorm.week2.day3.songju;
+
+import com.goorm.common.TestFileUtil;
+import org.junit.jupiter.api.DisplayName;
+import org.junit.jupiter.api.Test;
+
+import java.io.BufferedReader;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+@DisplayName("통증 - 송주")
+class SolutionTest {
+    @Test
+    @DisplayName("통증 - 케이스1")
+    void test_case_1() throws Exception {
+        BufferedReader reader = TestFileUtil.getReader(this.getClass(), "testcase/week2/day3/test_case1.txt");
+        int solution = Solution.solution(reader);
+        assertEquals(2, solution);
+    }
+
+    @Test
+    @DisplayName("통증 - 케이스2")
+    void test_case_2() throws Exception {
+        BufferedReader reader = TestFileUtil.getReader(this.getClass(), "testcase/week2/day3/test_case2.txt");
+        int solution = Solution.solution(reader);
+        assertEquals(9, solution);
+    }
+
+}

src/test/java/com/goorm/week2/day4/songju/SolutionTest.java

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+package com.goorm.week2.day4.songju;
+
+import com.goorm.common.TestFileUtil;
+import com.goorm.week2.day3.songju.Solution;
+import org.junit.jupiter.api.DisplayName;
+import org.junit.jupiter.api.Test;
+
+import java.io.BufferedReader;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+@DisplayName("폭탄 구현하기(2) - 송주")
+class SolutionTest {
+    @Test
+    @DisplayName("폭탄 구현하기(2) - 케이스1")
+    void test_case_1() throws Exception {
+        BufferedReader reader = TestFileUtil.getReader(this.getClass(), "testcase/week2/day4/test_case1.txt");
+        int solution = Solution.solution(reader);
+        assertEquals(6, solution);
+    }
+
+    @Test
+    @DisplayName("폭탄 구현하기(2) - 케이스2")
+    void test_case_2() throws Exception {
+        BufferedReader reader = TestFileUtil.getReader(this.getClass(), "testcase/week2/day4/test_case2.txt");
+        int solution = Solution.solution(reader);
+        assertEquals(8, solution);
+    }
+
+}

src/test/resources/testcase/week2/day3/test_case1.txt

@@ -0,0 +1 @@
+8

src/test/resources/testcase/week2/day3/test_case2.txt

@@ -0,0 +1 @@
+100

src/test/resources/testcase/week2/day4/test_case1.txt

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+4 4
+0 0 @ 0
+0 0 0 0
+0 # 0 0
+0 0 0 @
+2 2
+2 3
+1 4
+1 4

src/test/resources/testcase/week2/day4/test_case2.txt

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+4 4
+0 @ 0 0
+@ 0 @ 0
+0 @ 0 0
+0 0 0 0
+2 2
+2 2
+2 2
+2 2