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92 lines
2.1 KiB
92 lines
2.1 KiB
// File: preorder_traversal_i_compact_test.go
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// Created Time: 2023-05-09
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// Author: Reanon (793584285@qq.com)
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package chapter_backtracking
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import (
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"fmt"
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"testing"
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. "github.com/krahets/hello-algo/pkg"
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)
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func TestPreorderTraversalICompact(t *testing.T) {
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/* 初始化二叉树 */
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root := ArrToTree([]any{1, 7, 3, 4, 5, 6, 7})
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fmt.Println("\n初始化二叉树")
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PrintTree(root)
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// 前序遍历
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res := make([]*TreeNode, 0)
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preOrderI(root, &res)
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fmt.Println("\n输出所有值为 7 的节点")
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for _, node := range res {
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fmt.Printf("%v ", node.Val)
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}
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fmt.Println()
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}
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func TestPreorderTraversalIICompact(t *testing.T) {
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/* 初始化二叉树 */
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root := ArrToTree([]any{1, 7, 3, 4, 5, 6, 7})
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fmt.Println("\n初始化二叉树")
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PrintTree(root)
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// 前序遍历
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path := make([]*TreeNode, 0)
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res := make([][]*TreeNode, 0)
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preOrderII(root, &res, &path)
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fmt.Println("\n输出所有根节点到节点 7 的路径")
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for _, path := range res {
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for _, node := range path {
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fmt.Printf("%v ", node.Val)
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}
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fmt.Println()
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}
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}
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func TestPreorderTraversalIIICompact(t *testing.T) {
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/* 初始化二叉树 */
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root := ArrToTree([]any{1, 7, 3, 4, 5, 6, 7})
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fmt.Println("\n初始化二叉树")
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PrintTree(root)
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// 前序遍历
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path := make([]*TreeNode, 0)
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res := make([][]*TreeNode, 0)
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preOrderIII(root, &res, &path)
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fmt.Println("\n输出所有根节点到节点 7 的路径,且路径中不包含值为 3 的节点")
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for _, path := range res {
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for _, node := range path {
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fmt.Printf("%v ", node.Val)
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}
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fmt.Println()
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}
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}
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func TestPreorderTraversalIIITemplate(t *testing.T) {
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/* 初始化二叉树 */
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root := ArrToTree([]any{1, 7, 3, 4, 5, 6, 7})
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fmt.Println("\n初始化二叉树")
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PrintTree(root)
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// 回溯算法
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res := make([][]*TreeNode, 0)
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state := make([]*TreeNode, 0)
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choices := make([]*TreeNode, 0)
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choices = append(choices, root)
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backtrackIII(&state, &choices, &res)
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fmt.Println("\n输出所有根节点到节点 7 的路径,且路径中不包含值为 3 的节点")
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for _, path := range res {
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for _, node := range path {
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fmt.Printf("%v ", node.Val)
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}
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fmt.Println()
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}
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}
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