87차 3번 문제풀이

Author: Eric

live8/test87/문제3/황장현.js

@@ -0,0 +1,31 @@
+function solution(dirs) {
+  let x = 0;
+  let y = 0;
+
+  const visited = new Set();
+  const directions = {
+    U: [0, 1],
+    D: [0, -1],
+    L: [-1, 0],
+    R: [1, 0],
+  };
+
+  for (let dir of dirs) {
+    const [dx, dy] = directions[dir];
+    let nx = x + dx;
+    let ny = y + dy;
+
+    if (nx < -5 || nx > 5 || ny < -5 || ny > 5) continue;
+
+    const path = `[${x},${y}]->[${nx},${ny}]`;
+
+    visited.add(path);
+
+    x = nx;
+    y = ny;
+  }
+
+  return visited.size;
+}
+
+console.log(solution('ULURRDLLU'));