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Challenge's Answer #15

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25 changes: 24 additions & 1 deletion src/index.js
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Original file line number Diff line number Diff line change
Expand Up @@ -4,7 +4,30 @@
* @returns {number[][]}
*/
const findNodesWithZeroAndOneParents = (parentChildPairs) => {

let parents = []
let childs = []
for( let i = 0; i < parentChildPairs.length; i++){
if(!parents.includes(parentChildPairs[i][0])){
parents.push(parentChildPairs[i][0])
}
childs.push(parentChildPairs[i][1])
}
//Zero parents
for( let i = 0; i < parentChildPairs.length; i++){
if(parents.includes(parentChildPairs[i][1])){
let elementToRemove= parents.indexOf(parentChildPairs[i][1])
parents.splice(elementToRemove, 1)
}
}
let zeroParentsArray = parents
zeroParentsArray.sort((a, b) => a - b )
//One parent
let oneParentArray = childs.filter(function(value){
return childs.indexOf(value) === childs.lastIndexOf(value)
})
oneParentArray.sort((a, b) => a - b )

return arrays = [zeroParentsArray, oneParentArray]
}

module.exports = findNodesWithZeroAndOneParents;