Commitc093fe4

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fix: three errors (trekhleb#487)

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Lines changed: 3 additions & 3 deletions

Original file line number	Diff line number	Diff line change
`@@ -223,7 +223,7 @@ end findMax`
`223`	`223`	`inorder(root)`
`224`	`224`	`Pre: root is the root node of the BST`
`225`	`225`	`Post: the nodes in the BST have been visited in inorder`
`226`		`- if root = ø`
	`226`	`+ if root!= ø`
`227`	`227`	`inorder(root.left)`
`228`	`228`	`yield root.value`
`229`	`229`	`inorder(root.right)`
`@@ -237,7 +237,7 @@ end inorder`
`237`	`237`	`preorder(root)`
`238`	`238`	`Pre: root is the root node of the BST`
`239`	`239`	`Post: the nodes in the BST have been visited in preorder`
`240`		`- if root = ø`
	`240`	`+ if root!= ø`
`241`	`241`	`yield root.value`
`242`	`242`	`preorder(root.left)`
`243`	`243`	`preorder(root.right)`
`@@ -251,7 +251,7 @@ end preorder`
`251`	`251`	`postorder(root)`
`252`	`252`	`Pre: root is the root node of the BST`
`253`	`253`	`Post: the nodes in the BST have been visited in postorder`
`254`		`- if root = ø`
	`254`	`+ if root!= ø`
`255`	`255`	`postorder(root.left)`
`256`	`256`	`postorder(root.right)`
`257`	`257`	`yield root.value`

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