How can I convert a path string array into a tree-like structure?

Transforming a Path String Array into a Tree-Like Structure

Introduction:

Constructing a tree-like structure from an array of path strings can be challenging, but with the appropriate techniques, it can be efficiently achieved.

Solution:

The provided solution employs a recursive function, AddToTree, which takes as input a list of nodes representing the current state of the tree and the remaining path segments to be added. The algorithm proceeds as follows:

1. Check if the current path segment (first element of the path) already exists as a child node of the current root.
2. If not found, create a new node with the current path segment as its name and add it as a child of the current root.
3. Recursively call AddToTree on the remaining path segments, using the newly created child node as the new root.

Code Snippet:

<code class="go">func AddToTree(root []Node, names []string) []Node {
    if len(names) > 0 {
        var i int
        for i = 0; i < len(root); i++ {
            if root[i].Name == names[0] { //already in tree
                break
            }
        }
        if i == len(root) {
            root = append(root, Node{Name: names[0]})
        }
        root[i].Children = AddToTree(root[i].Children, names[1:])
    }
    return root
}</code>

Advantages of the Solution:

• Reusability: The function can be repeatedly applied to add multiple path strings to the tree.
• Integrity: It avoids duplicate nodes in the tree by checking for existing nodes before adding.
• Efficiency: Recursion ensures that the function only operates on necessary nodes in the tree.

Example Output:

The code generates the following output:

[{
    "name": "a",
    "children": [{
        "name": "b",
        "children": [{
            "name": "c"
        }, {
            "name": "g"
        }]
    }, {
        "name": "d"
    }]
}]

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