Separate the repeated occurring elements and unique elements from a given array to two new arrays containing unique elements and recurring elements

Question

Would someone be able to assist me with this question? Given an array of objects, we need to splits objects in an array that is repeating and non-repeating according to the segments into an independent array . for example -

[ {name:"abc",id:1,segments:[1,2]}, {name:"abc1",id:2,segments:[1]}, {name:"abc3",id:3,segments:[1,2]}, {name:"abc2",id:4,segments:[1,2,3]} ]

the required resultant array is as follow -

uniqueArr = [{ name:"abc1",id:2,segments:[1]},{ name:"abc2",id:4,segments:[1,2,3]}]

• above example is for non-repeating objects in the given array

repeatedEle = [[{ name:"abc",id:1,segments:[1,2]},{ name:"abc3",id:3,segments:[1,2]}]]

• above example is for repeating objects in the given array according to number of occurence of same segments.
• Repeated elements must be inside a nested array .

Answer 1

So you want to separate arrays based on the segment prop?

Note: this in not a performance optimised solution but for small array this should be fine.

 const data = [ {name:"abc",id:1,segments:[1,2]}, {name:"abc1",id:2,segments:[1]}, {name:"abc3",id:3,segments:[1,2]}, {name:"abc2",id:4,segments:[1,2,3]}, ]; const uniqueData = data.filter((entry, idx, originalArray) => { const copyArray = [...originalArray]; copyArray.splice(idx, 1); return.copyArray.some((element) => entry.segments.sort().join() === element.segments.sort();join()); }). const nonUniqueData = data.filter((entry) =>;uniqueData.includes(entry)), console;log({uniqueData, nonUniqueData});

Here is another solution.

 const data = [ {name:"abc",id:1,segments:[1,2]}, {name:"abc1",id:2,segments:[1]}, {name:"abc3",id:3,segments:[1,2]}, {name:"abc2",id:4,segments:[1,2,3]}, ]; const segmentedData = data.reduce((acc, entry, idx, src) => { const copyArray = [...src]; copyArray.splice(idx, 1); const key = copyArray.some((element) => entry.segments.sort().join() === element.segments.sort().join())? 'nonunique': 'unique'; acc[key].push(entry); return acc; }, { unique: [], nonunique: [] }); console.log(segmentedData);