House Robber

Author: TonyKim9401

house-robber/TonyKim9401.java

@@ -0,0 +1,21 @@
+// TC: O(n)
+// always need to check every case
+// SC: O(n)
+// the length of the result int list is same with the length of the given nums int list
+class Solution {
+    public int rob(int[] nums) {
+        int[] result = new int[nums.length];
+
+        if (nums.length < 2) return nums[0];
+        if (nums.length < 3) return Math.max(nums[0], nums[1]);
+
+        result[0] = nums[0];
+        result[1] = Math.max(nums[0], nums[1]);
+
+        for (int i = 2; i < nums.length; i++) {
+            result[i] = Math.max(result[i - 1], result[i - 2] + nums[i]);
+        }
+
+        return result[nums.length-1];
+    }
+}