[20250313] BOJ / G3 / 소용돌이 이쁘게 출력하기 / 신희을

ShinHeeEul/202503/13 BOJ G3 소용돌이 이쁘게 출력하기.md

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+import java.io.*;
+import java.util.*;
+
+public class Main {
+
+
+    static int[][] map;
+    public static void main(String[] args) throws Exception {
+    	BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
+
+
+    	int dir = 0;
+    	int[] di = {0, -1, 0, 1};
+    	int[] dj = {-1, 0, 1, 0};
+
+
+    	int i = 10000;
+    	int j = 10000;
+
+
+    	StringTokenizer st = new StringTokenizer(br.readLine());
+
+    	int r1 = Integer.parseInt(st.nextToken()) + 5000;
+    	int c1 = Integer.parseInt(st.nextToken()) + 5000;
+    	int r2 = Integer.parseInt(st.nextToken()) + 5000;
+    	int c2 = Integer.parseInt(st.nextToken()) + 5000;
+
+    	map = new int[r2 - r1 + 1][c2 - c1 + 1];
+    	int cnt = 0;
+    	int limit = 10001;
+    	boolean bool = true;
+
+    	int max = 0;
+    	for(int a = 10001 * 10001 ; a > 0; a--) {
+
+    		if(i >= r1 && i <= r2 && j >= c1 && j <= c2) {
+    			max = Math.max(a,  max);
+    			map[i - r1][j - c1] = a;
+    		}
+    		cnt++;
+    		int nxti = i + di[dir];
+    		int nxtj = j + dj[dir];
+
+    		if(cnt == limit) {
+    			cnt = 0;
+    			if(bool) {
+    				bool = false;
+    				limit--;
+    			} else {
+    				bool = true;
+    			}
+    			dir = (dir + 1) % 4;
+    			i += di[dir];
+    			j += dj[dir];
+    			continue;
+    		}
+
+    		i = nxti;
+    		j = nxtj;
+    	}
+
+    	StringBuilder sb = new StringBuilder();
+
+    	int ans = 0;
+    	while(max > 0) {
+    		ans++;
+    		max /= 10;
+    	}
+
+    	for(int a = 0; a < map.length; a++) {
+    		for(int b = 0; b < map[0].length; b++) {
+    			sb.append(String.format("%" + ans + "d", map[a][b])).append(" ");
+    		}
+    		sb.append("\n");
+    	}
+
+    	System.out.println(sb);
+    }
+
+}