add new solutions

solutions/14/q1448/solution.go

@@ -0,0 +1,28 @@
+package q1448
+
+import "math"
+
+type TreeNode struct {
+	Val   int
+	Left  *TreeNode
+	Right *TreeNode
+}
+
+func gn(node *TreeNode, curMax int) int {
+	if node == nil {
+		return 0
+	}
+	self := 0
+	if node.Val >= curMax {
+		self = 1
+	}
+
+	curMax = max(curMax, node.Val)
+	return self + gn(node.Left, curMax) + gn(node.Right, curMax)
+}
+
+func goodNodes(root *TreeNode) int {
+	return gn(root, math.MinInt)
+}
+
+var _ = goodNodes