Yeji week2-2

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

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+package com.goorm.week2.day3.yeji;
+
+import java.io.BufferedReader;
+import java.io.IOException;
+import java.io.InputStreamReader;
+
+/**
+ * 통증 (195690)
+ * 35' 16"
+ */
+public class Solution {
+
+    public static void main(String[] args) {
+        try (BufferedReader reader = new BufferedReader(new InputStreamReader(System.in))) {
+            System.out.print(solution(reader));
+        } catch (IOException e) {
+            e.printStackTrace();
+        }
+    }
+
+    static int solution(BufferedReader br) throws IOException {
+        int n = Integer.parseInt(br.readLine());
+        int[] items = {14, 7};
+        int answer = 0;
+
+        for (int item : items) {
+            answer += Math.floorDiv(n, item);
+            n = Math.floorMod(n, item);
+        }
+
+        return answer + n;
+    }
+
+}

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

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+package com.goorm.week2.day4.yeji;
+
+import java.io.BufferedReader;
+import java.io.IOException;
+import java.io.InputStreamReader;
+import java.util.Arrays;
+import java.util.StringTokenizer;
+
+/**
+ * 폭탄 구현하기 (2)
+ * 8' 23"
+ */
+public class Solution {
+
+    private static final int[] dx = {1, 0, -1, 0};
+    private static final int[] dy = {0, 1, 0, -1};
+
+    private static int max;
+
+    public static void main(String[] args) throws Exception {
+        try (BufferedReader reader = new BufferedReader(new InputStreamReader(System.in))) {
+            System.out.print(solution(reader));
+        } catch (IOException e) {
+            e.printStackTrace();
+        }
+    }
+
+    static int solution(BufferedReader br) throws IOException {
+        StringTokenizer st = new StringTokenizer(br.readLine());
+        int n = Integer.parseInt(st.nextToken());
+        int bombCount = Integer.parseInt(st.nextToken());
+        String[][] map = new String[n][n];
+        int[][] bombMap = new int[n][n];
+        max = 0;
+
+        for (int i = 0; i < n; i++) {
+            map[i] = br.readLine().split(" ");
+        }
+
+        for (int i = 0; i < bombCount; i++) {
+            int[] location = Arrays.stream(br.readLine().split(" ")).mapToInt(Integer::parseInt).toArray();
+            poppingBomb(location[0] - 1, location[1] - 1, map, bombMap, n);
+        }
+
+        return max;
+    }
+
+    private static void poppingBomb(int x, int y, String[][] map, int[][] bombMap, int n) {
+        plusBomb(x, y, map, bombMap);
+
+        for (int i = 0; i < 4; i++) {
+            int cx = x + dx[i];
+            int cy = y + dy[i];
+
+            if (cx >= 0 && cx < n && cy >= 0 && cy < n && !"#".equals(map[cx][cy])) {
+                plusBomb(cx, cy, map, bombMap);
+                max = Math.max(max, bombMap[cx][cy]);
+            }
+
+        }
+
+    }
+
+    private static void plusBomb(int x, int y, String[][] map, int[][] bombMap) {
+        if ("0".equals(map[x][y])) {
+            bombMap[x][y]++;
+            return;
+        }
+        bombMap[x][y] += 2;
+    }
+}

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

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

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

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

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