Golang NewWithIntComparator示例

示例#1

文件： redblacktreeextended.go 项目： theseusyang/gods

func RedBlackTreeExtendedExample() {
	tree := RedBlackTreeExtended{rbt.NewWithIntComparator()}

	tree.Put(1, "a") // 1->x (in order)
	tree.Put(2, "b") // 1->x, 2->b (in order)
	tree.Put(3, "c") // 1->x, 2->b, 3->c (in order)
	tree.Put(4, "d") // 1->x, 2->b, 3->c, 4->d (in order)
	tree.Put(5, "e") // 1->x, 2->b, 3->c, 4->d, 5->e (in order)

	print(&tree)
	// Value for max key: e
	// Value for min key: a
	// RedBlackTree
	// │       ┌── 5
	// │   ┌── 4
	// │   │   └── 3
	// └── 2
	//     └── 1

	tree.RemoveMin() // 2->b, 3->c, 4->d, 5->e (in order)
	tree.RemoveMax() // 2->b, 3->c, 4->d (in order)
	tree.RemoveMin() // 3->c, 4->d (in order)
	tree.RemoveMax() // 3->c (in order)

	print(&tree)
	// Value for max key: c
	// Value for min key: c
	// RedBlackTree
	// └── 3

	// Ceiling and Floor functions
	tree = RedBlackTreeExtended{rbt.NewWithIntComparator()}
	tree.Put(1, "a")
	tree.Put(2, "b")
	tree.Put(4, "d")
	tree.Put(6, "f")
	tree.Put(7, "g")

	//index, ceiling, floor
	testValues := [][]interface{}{
		{0, 1, nil},
		{1, 1, 1},
		{2, 2, 2},
		{3, 4, 2},
		{4, 4, 4},
		{5, 6, 4},
		{6, 6, 6},
		{7, 7, 7},
		{8, nil, 7},
	}
	for _, tt := range testValues {
		actualCeiling, _ := tree.Ceiling(tt[0])
		actualFloor, _ := tree.Floor(tt[0])
		fmt.Printf("test key %d, expected (%d, %d), actual (%d, %d)\n", tt[0], tt[1], tt[2], actualCeiling.Key, actualFloor.Key)
	}
}

示例#2

文件： redblacktreeextended.go 项目： legendtkl/gods

// RedBlackTreeExtendedExample main method on how to use the custom red-black tree above
func RedBlackTreeExtendedExample() {
	tree := RedBlackTreeExtended{rbt.NewWithIntComparator()}

	tree.Put(1, "a") // 1->x (in order)
	tree.Put(2, "b") // 1->x, 2->b (in order)
	tree.Put(3, "c") // 1->x, 2->b, 3->c (in order)
	tree.Put(4, "d") // 1->x, 2->b, 3->c, 4->d (in order)
	tree.Put(5, "e") // 1->x, 2->b, 3->c, 4->d, 5->e (in order)

	print(&tree)
	// Value for max key: e
	// Value for min key: a
	// RedBlackTree
	// │       ┌── 5
	// │   ┌── 4
	// │   │   └── 3
	// └── 2
	//     └── 1

	tree.RemoveMin() // 2->b, 3->c, 4->d, 5->e (in order)
	tree.RemoveMax() // 2->b, 3->c, 4->d (in order)
	tree.RemoveMin() // 3->c, 4->d (in order)
	tree.RemoveMax() // 3->c (in order)

	print(&tree)
	// Value for max key: c
	// Value for min key: c
	// RedBlackTree
	// └── 3
}

示例#3

文件： redblacktree.go 项目： GoNuuts/gods

// RedBlackTreeExample to demonstrate basic usage of RedBlackTree
func RedBlackTreeExample() {
	tree := rbt.NewWithIntComparator() // empty(keys are of type int)

	tree.Put(1, "x") // 1->x
	tree.Put(2, "b") // 1->x, 2->b (in order)
	tree.Put(1, "a") // 1->a, 2->b (in order, replacement)
	tree.Put(3, "c") // 1->a, 2->b, 3->c (in order)
	tree.Put(4, "d") // 1->a, 2->b, 3->c, 4->d (in order)
	tree.Put(5, "e") // 1->a, 2->b, 3->c, 4->d, 5->e (in order)
	tree.Put(6, "f") // 1->a, 2->b, 3->c, 4->d, 5->e, 6->f (in order)

	fmt.Println(tree)
	//
	//  RedBlackTree
	//  │           ┌── 6
	//  │       ┌── 5
	//  │   ┌── 4
	//  │   │   └── 3
	//  └── 2
	//       └── 1

	_ = tree.Values() // []interface {}{"a", "b", "c", "d", "e", "f"} (in order)
	_ = tree.Keys()   // []interface {}{1, 2, 3, 4, 5, 6} (in order)

	tree.Remove(2) // 1->a, 3->c, 4->d, 5->e, 6->f (in order)
	fmt.Println(tree)
	//
	//  RedBlackTree
	//  │       ┌── 6
	//  │   ┌── 5
	//  └── 4
	//      │   ┌── 3
	//      └── 1

	tree.Clear() // empty
	tree.Empty() // true
	tree.Size()  // 0
}

示例#4

文件： treemap.go 项目： kebo/gods

// NewWithIntComparator instantiates a tree map with the IntComparator, i.e. keys are of type int.
func NewWithIntComparator() *Map {
	return &Map{tree: rbt.NewWithIntComparator()}
}

示例#5

文件： treeset.go 项目： GoNuuts/gods

// NewWithIntComparator instantiates a new empty set with the IntComparator, i.e. keys are of type int.
func NewWithIntComparator() *Set {
	return &Set{tree: rbt.NewWithIntComparator()}
}