85차 2번 문제풀이

Author: Eric

live8/test85/문제2/황장현.js

@@ -0,0 +1,48 @@
+const input = require('fs')
+  .readFileSync(process.platform === 'linux' ? '/dev/stdin' : './input.txt')
+  .toString()
+  .trim()
+  .split('\n')
+  .map((el) => el.split(' '));
+
+function solution(input) {
+  const T = Number(input[0][0]);
+  let index = 1;
+  const result = [];
+  const dx = [-1, 1, 0, 0];
+  const dy = [0, 0, -1, 1];
+
+  for (let i = 0; i < T; i++) {
+    const [H, W] = input[index].map((el) => Number(el));
+    const sheeps = input
+      .slice(index + 1, index + 1 + H)
+      .map((row) => row.join('').split(''));
+
+    index += H + 1;
+
+    let count = 0;
+    function dfs(x, y) {
+      sheeps[x][y] = '.';
+      for (let i = 0; i < 4; i++) {
+        const nx = x + dx[i];
+        const ny = y + dy[i];
+        if (nx >= 0 && nx < H && ny >= 0 && ny < W && sheeps[nx][ny] === '#') {
+          dfs(nx, ny);
+        }
+      }
+    }
+
+    for (let i = 0; i < H; i++) {
+      for (let j = 0; j < W; j++) {
+        if (sheeps[i][j] === '#') {
+          count++;
+          dfs(i, j);
+        }
+      }
+    }
+    result.push(count);
+  }
+  return result.join('\n');
+}
+
+console.log(solution(input));