feat: house-rober-ii

Author: gwbaik9717

house-robber-ii/gwbaik9717.js

@@ -0,0 +1,26 @@
+// Time complexity: O(n)
+// Space complexity: O(n)
+
+/**
+ * @param {number[]} nums
+ * @return {number}
+ */
+var rob = function (nums) {
+  if (nums.length === 1) {
+    return nums[0];
+  }
+
+  // include first
+  const dp1 = Array.from({ length: nums.length + 1 }, () => 0);
+  dp1[1] = nums[0];
+
+  // exclude first
+  const dp2 = Array.from({ length: nums.length + 1 }, () => 0);
+
+  for (let i = 2; i <= nums.length; i++) {
+    dp1[i] = Math.max(dp1[i - 2] + nums[i - 1], dp1[i - 1]);
+    dp2[i] = Math.max(dp2[i - 2] + nums[i - 1], dp2[i - 1]);
+  }
+
+  return Math.max(dp1.at(-2), dp2.at(-1));
+};