My Data Structure Example:
var tree = {
name: "docs",
type: "dir",
full: "/home/docs",
children: [
{
name: "folder2",
type: "dir",
full: "/home/docs/folder2",
children: [
{
name: "file2.txt",
type: "file",
full: "/home/docs/folder2/file2.txt"
}
]
},
{
name: "file1.txt",
type: "file",
full: "/home/docs/file1.txt"
}
]
}
This specific data structure represents a user's folder contents, and it can vary per user.
A key feature is that each element denotes either a file or directory, where directories have the property type: "dir" and files have type: "file".
If an element is a directory, it will also contain a children property which is an array of similar elements.
Every element has a name property representing its folder or file name, and a full property which is a unique string defining its location in the user's filesystem.
An Algorithm I Developed:
var tree = {
name: "docs",
type: "dir",
full: "/home/docs",
children: [
{
name: "folder2",
type: "dir",
full: "/home/docs/folder2",
children: [
{
name: "file2.txt",
type: "file",
full: "/home/docs/folder2/file2.txt"
}
]
},
{
name: "file1.txt",
type: "file",
full: "/home/docs/file1.txt"
}
]
}
function FindChildrenInTree(fullPath, treeObj) {
if (treeObj.type != "dir") { return null; }
if (treeObj.children == null) { return null }
if (treeObj.full == fullPath) { return treeObj; }
for (var i = 0; i < treeObj.children.length; i++) {
if (treeObj.children[i].full == fullPath) {
return treeObj.children[i];
} else {
var result = FindChildrenInTree(fullPath, treeObj.children[i]);
if (result != null) return result;
}
}
return null;
}
console.log(FindChildrenInTree("/home/docs/folder2", tree))The algorithm locates a folder in the provided tree object and returns it. Instead of just returning the item found, I aim to add a children property to that item within the given tree.
For instance, with the above tree structure, when providing the algorithm with the item's unique path, the tree, and the array of children I wish to add, I am struggling to figure out how to achieve this. Can you provide any guidance on how to approach this challenge?