u

2026-06-01 03:33:34 +10:00
parent 6e099eb6fe
commit 5022093fad
7 changed files with 335 additions and 0 deletions
@@ -0,0 +1,43 @@
+package top100liked
+
+import "testing"
+
+// 爆内存
+// func maxSubArray(nums []int) int {
+// 	l := len(nums)
+// 	msa := make([][]int, l)
+// 	for i := range msa {
+// 		msa[i] = make([]int, l)
+// 	}
+// 	res := nums[0]
+// 	for i, v := range nums {
+// 		msa[i][i] = v
+// 		res = max(res, v)
+// 	}
+// 	for i := range l {
+// 		for j := i + 1; j < l; j++ {
+// 			msa[i][j] = msa[i][j-1] + nums[j]
+// 			res = max(res, msa[i][j])
+// 		}
+// 	}
+// 	return res
+// }
+
+func maxSubArray(nums []int) int {
+	dp := make([]int, len(nums))
+	dp[0] = nums[0]
+	maxSoFar := nums[0]
+
+	for i := 1; i < len(nums); i++ {
+		dp[i] = max(nums[i], dp[i-1]+nums[i])
+		maxSoFar = max(maxSoFar, dp[i])
+	}
+	return maxSoFar
+}
+
+func TestS13(t *testing.T) {
+	println(maxSubArray([]int{-2, 1, -3, 4, -1, 2, 1, -5, 4}))
+	println(maxSubArray([]int{1}))
+	println(maxSubArray([]int{5, 4, -1, 7, 8}))
+	println(maxSubArray([]int{-2, 1}))
+}