198

2 files changed, 48 insertions, 0 deletions

diff --git a/198/go.mod b/198/go.mod
new file mode 100644
index 0000000..d1e9d1c
--- /dev/null
+++ b/198/go.mod
@@ -0,0 +1,3 @@
+module 198
+
+go 1.19
diff --git a/198/main.go b/198/main.go
new file mode 100644
index 0000000..d61ec01
--- /dev/null
+++ b/198/main.go
@@ -0,0 +1,45 @@
+package main
+
+import "fmt"
+
+func max(a, b int) int {
+	if a > b {
+		return a
+	}
+	return b
+}
+
+func rob(nums []int) int {
+	nlen := len(nums)
+
+	switch nlen {
+	case 0:
+		return 0
+	case 1:
+		return nums[0]
+	case 2:
+		return max(nums[0], nums[1])
+	case 3:
+		return max(nums[1], nums[0]+nums[2])
+	}
+
+	dp := make([]int, nlen)
+
+	dp[0] = nums[0]
+	dp[1] = nums[1]
+	dp[2] = nums[0] + nums[2]
+
+	for i := 3; i < nlen; i++ {
+		dp[i] = max(dp[i-2]+nums[i], dp[i-3]+nums[i])
+	}
+
+	return max(dp[len(dp)-1], dp[len(dp)-2])
+}
+
+func main() {
+	fmt.Println(rob([]int{1, 100, 5, 4, 100, 1}))
+	fmt.Println(rob([]int{1, 2, 3, 1}))
+	fmt.Println(rob([]int{2, 7, 9, 3, 1}))
+	fmt.Println(rob([]int{2, 3, 2}))
+	fmt.Println(rob([]int{1, 1, 1, 2}))
+}