783 finish

aQua · aQua · commit bdc1dc54470c · 2018-03-13T20:05:30.000+08:00
diff --git a/Algorithms/0783.minimum-distance-between-bst-nodes/minimum-distance-between-bst-nodes.go b/Algorithms/0783.minimum-distance-between-bst-nodes/minimum-distance-between-bst-nodes.go
@@ -17,14 +17,16 @@ type TreeNode = kit.TreeNode
 
 func minDiffInBST(root *TreeNode) int {
 	res := 1<<63 - 1
-	pre := -1
+	pre := 1>>63
+	null := pre 
+
 	var helper func(*TreeNode)
 	helper = func (root *TreeNode) {
 		if root.Left != nil {
 			helper(root.Left)
 		}
 	
-		if pre <0{
+		if pre != null{
 			res = min(res, root.Val-pre)
 		}
 	
@@ -34,6 +36,7 @@ func minDiffInBST(root *TreeNode) int {
 			helper(root.Right)
 		}
 	}
+
 	helper(root)
 
 	return res

Original file line number	Diff line number	Diff line change
`@@ -17,14 +17,16 @@ type TreeNode = kit.TreeNode`
`17`	`17`
`18`	`18`	`func minDiffInBST(root *TreeNode) int {`
`19`	`19`	`res := 1<<63 - 1`
`20`		`- pre := -1`
	`20`	`+ pre := 1>>63`
	`21`	`+ null := pre`
	`22`	`+`
`21`	`23`	`var helper func(*TreeNode)`
`22`	`24`	`helper = func (root *TreeNode) {`
`23`	`25`	`if root.Left != nil {`
`24`	`26`	`helper(root.Left)`
`25`	`27`	`}`
`26`	`28`
`27`		`- if pre <0{`
	`29`	`+ if pre != null{`
`28`	`30`	`res = min(res, root.Val-pre)`
`29`	`31`	`}`
`30`	`32`
`@@ -34,6 +36,7 @@ func minDiffInBST(root *TreeNode) int {`
`34`	`36`	`helper(root.Right)`
`35`	`37`	`}`
`36`	`38`	`}`
	`39`	`+`
`37`	`40`	`helper(root)`
`38`	`41`
`39`	`42`	`return res`