Merge pull request #2657 from sxdtywm/patch-3

Update 0101.孤岛的总面积.md of other languages

problems/kamacoder/0101.孤岛的总面积.md

@@ -185,6 +185,77 @@ int main() {
 
 ### Java 
 
+``` java
+
+import java.util.*;
+
+public class Main {
+    private static int count = 0;
+    private static final int[][] dir = {{0, 1}, {1, 0}, {-1, 0}, {0, -1}}; // 四个方向
+
+    private static void bfs(int[][] grid, int x, int y) {
+        Queue<int[]> que = new LinkedList<>();
+        que.add(new int[]{x, y});
+        grid[x][y] = 0; // 只要加入队列，立刻标记
+        count++;
+        while (!que.isEmpty()) {
+            int[] cur = que.poll();
+            int curx = cur[0];
+            int cury = cur[1];
+            for (int i = 0; i < 4; i++) {
+                int nextx = curx + dir[i][0];
+                int nexty = cury + dir[i][1];
+                if (nextx < 0 || nextx >= grid.length || nexty < 0 || nexty >= grid[0].length) continue; // 越界了，直接跳过
+                if (grid[nextx][nexty] == 1) {
+                    que.add(new int[]{nextx, nexty});
+                    count++;
+                    grid[nextx][nexty] = 0; // 只要加入队列立刻标记
+                }
+            }
+        }
+    }
+
+    public static void main(String[] args) {
+        Scanner scanner = new Scanner(System.in);
+        int n = scanner.nextInt();
+        int m = scanner.nextInt();
+        int[][] grid = new int[n][m];
+        
+        // 读取网格
+        for (int i = 0; i < n; i++) {
+            for (int j = 0; j < m; j++) {
+                grid[i][j] = scanner.nextInt();
+            }
+        }
+        
+        // 从左侧边，和右侧边向中间遍历
+        for (int i = 0; i < n; i++) {
+            if (grid[i][0] == 1) bfs(grid, i, 0);
+            if (grid[i][m - 1] == 1) bfs(grid, i, m - 1);
+        }
+        
+        // 从上边和下边向中间遍历
+        for (int j = 0; j < m; j++) {
+            if (grid[0][j] == 1) bfs(grid, 0, j);
+            if (grid[n - 1][j] == 1) bfs(grid, n - 1, j);
+        }
+        
+        count = 0;
+        for (int i = 0; i < n; i++) {
+            for (int j = 0; j < m; j++) {
+                if (grid[i][j] == 1) bfs(grid, i, j);
+            }
+        }
+
+        System.out.println(count);
+    }
+}
+
+
+
+```
+
+
 ### Python
 ```python
 from collections import deque
@@ -238,6 +309,97 @@ print(count)
 ```
 ### Go
 
+``` go
+
+package main
+
+import (
+    "fmt"
+)
+
+var count int
+var dir = [4][2]int{{0, 1}, {1, 0}, {-1, 0}, {0, -1}} // 四个方向
+
+func bfs(grid [][]int, x, y int) {
+    queue := [][2]int{{x, y}}
+    grid[x][y] = 0 // 只要加入队列，立刻标记
+    count++
+    
+    for len(queue) > 0 {
+        cur := queue[0]
+        queue = queue[1:]
+        curx, cury := cur[0], cur[1]
+        
+        for i := 0; i < 4; i++ {
+            nextx := curx + dir[i][0]
+            nexty := cury + dir[i][1]
+            
+            if nextx < 0 || nextx >= len(grid) || nexty < 0 || nexty >= len(grid[0]) {
+                continue // 越界了，直接跳过
+            }
+            
+            if grid[nextx][nexty] == 1 {
+                queue = append(queue, [2]int{nextx, nexty})
+                count++
+                grid[nextx][nexty] = 0 // 只要加入队列立刻标记
+            }
+        }
+    }
+}
+
+func main() {
+    var n, m int
+    fmt.Scan(&n, &m)
+    
+    grid := make([][]int, n)
+    for i := range grid {
+        grid[i] = make([]int, m)
+    }
+    
+    for i := 0; i < n; i++ {
+        for j := 0; j < m; j++ {
+            fmt.Scan(&grid[i][j])
+        }
+    }
+    
+    // 从左侧边，和右侧边向中间遍历
+    for i := 0; i < n; i++ {
+        if grid[i][0] == 1 {
+            bfs(grid, i, 0)
+        }
+        if grid[i][m-1] == 1 {
+            bfs(grid, i, m-1)
+        }
+    }
+    
+    // 从上边和下边向中间遍历
+    for j := 0; j < m; j++ {
+        if grid[0][j] == 1 {
+            bfs(grid, 0, j)
+        }
+        if grid[n-1][j] == 1 {
+            bfs(grid, n-1, j)
+        }
+    }
+    
+    // 清空之前的计数
+    count = 0
+    
+    // 遍历所有位置
+    for i := 0; i < n; i++ {
+        for j := 0; j < m; j++ {
+            if grid[i][j] == 1 {
+                bfs(grid, i, j)
+            }
+        }
+    }
+    
+    fmt.Println(count)
+}
+
+
+```
+
 ### Rust
 
 ### Javascript