递归地在深度嵌套的对象数组中查找对象 [英] Find an object in an array of deeply nested objects recursively
本文介绍了递归地在深度嵌套的对象数组中查找对象的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
我有一个数组,每个项目都是一个具有唯一 ID 的对象.有些项目也可能有子项,它可以在子数组中包含子数组.我正在尝试使用 Id 选择一个项目.
I have an array, and each item is an object with unique Ids. Some items may also have children, and it can have children array inside a children array. I'm trying to pick an item using an Id.
const array = [
{
uuid: '40E75F3DE56B4B11B3AFBDE46785737B'
}, {
uuid: '9CEF74766BBB4B9682B7817B43CEAE48'
}, {
uuid: '34F209A883D3406FBA6BACD9E07DB1D9',
children: [{
uuid: 'F429C51BF01C405DA517616E0E16DE4E',
children: [{
uuid: '8823CFCE7D4645C68991332091C1A05C'
}, {
uuid: '58A9345E881F48C980498C7FFB68667D'
}]
}]
}, {
uuid: '152488CC33434A8C9CACBC2E06A7E535'
}, {
uuid: '9152B3DEF40F414BBBC68CACE2F5F6E4'
}, {
uuid: 'B9A39766B17E4406864D785DB6893C3D'
},
{
uuid: '3J4H4J5HN6K4344D785DBJ345HSSODF',
children: [
{
uuid: 'EAB14DD72DA24BB88B4837C9D5276859'
},
{
uuid: 'FFA80D043380481F8835859A0839512B'
},
{
uuid: '9679687190354FA79EB9D1CA7B4962B1'
}
]
}
]
下面的代码适用于没有子元素的简单数组.我需要一个函数,或者一个可以递归搜索整个数组并返回对象(数组中的项目)的 lodash 模块
The code below works for a simple array without children. I need a function, or a lodash module that can recursively search the entire array and return the object(item in the array)
findContainingObject(array, uuid) {
let result = [];
result = array.filter( item => {
return item.uuid === uuid
})
return result;
}
预期输出:
findContainingObject(array, '40E75F3DE56B4B11B3AFBDE46785737B')
{
uuid: '40E75F3DE56B4B11B3AFBDE46785737B'
}
findContainingObject(array, '34F209A883D3406FBA6BACD9E07DB1D9')
{
uuid: '34F209A883D3406FBA6BACD9E07DB1D9',
children: [{
uuid: 'F429C51BF01C405DA517616E0E16DE4E',
children: [{
uuid: '8823CFCE7D4645C68991332091C1A05C'
}, {
uuid: '58A9345E881F48C980498C7FFB68667D'
}]
}]
}
findContainingObject(array, '58A9345E881F48C980498C7FFB68667D')
{
uuid: '58A9345E881F48C980498C7FFB68667D'
}
推荐答案
该函数实现了DFS:
function findDFS(objects, id) {
for (let o of objects || []) {
if (o.uuid == id) return o
const o_ = findDFS(o.children, id)
if (o_) return o_
}
}
和 BFS:
function findBFS(objects, id) {
const queue = [...objects]
while (queue.length) {
const o = queue.shift()
if (o.uuid == id) return o
queue.push(...(o.children || []))
}
}
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