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Resolve problem3 #2

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Resolve problem3 #2

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38 changes: 28 additions & 10 deletions problem3.js
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Original file line number Diff line number Diff line change
Expand Up @@ -28,6 +28,7 @@
*
* getRootProperty(object, 999); //=> null
* return null if the value isn't found. */

object = {
r1n: {
mkg: {
Expand All @@ -48,17 +49,34 @@ object = {
}

function getRootProperty(object, val) {
for (let key in object) {
if (String(object[key]) === '[object Object]') {
getRootProperty(object[key], val)
}
if (Array.isArray(object[key])) {
if (object[key].includes(val)) return key

// helper function
return (function trackNodepath (object, nodePath = []) {

for (let key in object) {

let newNodePath = nodePath.length === 0 ? [key] : nodePath.concat([key])

if (Array.isArray(object[key])) {
if (object[key].includes(val)) return newNodePath[0]
}

if (typeof (object[key]) === 'object' && object[key] !== null && !Array.isArray(object[key])) {
let result = trackNodepath(object[key], newNodePath)

if (result) return result
}

}

return null
}
) (object)

}
return null
}
console.log(getRootProperty(object, 9));


console.log('expected r1n ', getRootProperty(object, 21));
console.log('expected r1n ', getRootProperty(object, 250));
console.log('expected fik ',getRootProperty(object, 92));
console.log('expected fik ',getRootProperty(object, 29));
console.log('expected null ',getRootProperty(object, 293353435));