115차 2번 문제풀이

Author: jinoo0306

live11/test115/문제2/조진우.js

@@ -0,0 +1,28 @@
+const input = require("fs")
+  .readFileSync(
+    process.platform === "linux"
+      ? "/dev/stdin"
+      : require("path").join(__dirname, "input.txt"),
+    "utf8"
+  )
+  .trim()
+  .split("\n");
+
+function solution(input) {
+  const N = +input[0];
+  const A = input[1].split(" ").map(Number);
+  const answer = new Array(N).fill(-1);
+  const stack = [];
+
+  for (let i = N - 1; i >= 0; i--) {
+    while (stack.length && stack[stack.length - 1] <= A[i]) stack.pop();
+
+    if (stack.length) answer[i] = stack[stack.length - 1];
+
+    stack.push(A[i]);
+  }
+
+  return answer.join(" ");
+}
+
+console.log(solution(input));