diff --git a/src/main/java/com/cool/ling_cha_mount/dp/Num213.java b/src/main/java/com/cool/ling_cha_mount/dp/Num213.java
new file mode 100644
index 0000000..2f9c938
--- /dev/null
+++ b/src/main/java/com/cool/ling_cha_mount/dp/Num213.java
@@ -0,0 +1,15 @@
+package com.cool.ling_cha_mount.dp;
+
+public class Num213 {
+    public int rob(int[] nums) {
+        return Math.max(nums[0]+rob1(nums,2,nums.length-1),rob1(nums,1,nums.length));
+    }
+    public int rob1(int[] nums,int start,int end) {
+        int[] dp = new int[nums.length + 2];
+        for (int i = start; i < end; i++) {
+            dp[i + 2] = Math.max(dp[i] + nums[i], dp[i + 1]);
+        }
+        return dp[end+ 1];
+    }
+}
+