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20250815 baekjoon

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songyc macbook 2025-08-15 23:21:43 +09:00
parent 91d33b30f0
commit 9ea135f2b2
1 changed files with 56 additions and 0 deletions
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code_study/Baekjoon/java/_10026.java Normal file
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import java.util.*;
public class _10026 {
public static int countAreaBFS(String[] grid, int N){
int[] dx = {1,-1,0,0};
int[] dy = {0,0,1,-1};
Deque<Integer> qx = new ArrayDeque<>();
Deque<Integer> qy = new ArrayDeque<>();
boolean[][] visited = new boolean[N][N];
int countArea = 0;
for(int i=0; i<N; i++){
for(int j=0; j<N; j++){
if(!visited[i][j]){
visited[i][j] = true;
char color = grid[i].charAt(j);
qx.add(j);
qy.add(i);
while(qx.size() != 0 && qy.size() != 0){
int cx = qx.poll();
int cy = qy.poll();
for(int d=0; d<4; d++){
int nx = cx + dx[d];
int ny = cy + dy[d];
if(0<=nx && nx<N && 0<=ny && ny<N && grid[ny].charAt(nx) == color && !visited[ny][nx]){
visited[ny][nx] = true;
qx.add(nx);
qy.add(ny);
}
}
}
countArea += 1;
}
}
}
return countArea;
}
public static void main(String[] args) {
Scanner sc = new Scanner(System.in);
int N = Integer.parseInt(sc.nextLine());
String[] grid_normal = new String[N];
String[] grid_blindness = new String[N];
for(int i=0; i<N; i++){
String line = sc.nextLine();
grid_normal[i] = line;
grid_blindness[i] = line.replace('R', 'G');
}
sc.close();
int areaCount_normal = countAreaBFS(grid_normal, N);
int areaCount_blindness = countAreaBFS(grid_blindness, N);
System.out.println(areaCount_normal + " " + areaCount_blindness);
}
}