diff --git a/maximum-subarray/sol.go b/maximum-subarray/sol.go
new file mode 100644
index 0000000..1f0c728
--- /dev/null
+++ b/maximum-subarray/sol.go
@@ -0,0 +1,17 @@
+package main
+
+// Time: O(n)
+// Space: O(1)
+func maxSubArray(nums []int) int {
+	current, max := 0, nums[0]
+	for _, num := range nums {
+		current += num
+		if current > max {
+			max = current
+		}
+		if current < 0 {
+			current = 0
+		}
+	}
+	return max
+}