CODEWITHSUNDEEP
javascriptsortingmerge
EnTil
EnTil

Reputation: 11

Merge sort based on number of values in arrays

I would like to understand how to use merge sort to sort arrays based on the number of values in each array.

let test = [
{
name: "a",
numbers: [1,2]
},{
name: "b",
numbers: [1,2,3]
},{
name: "c",
numbers: [5]

The 'a' has 2 numbers, the 'b' has 3 numbers and the 'c' has 1 number. So it should be sorte as follows, from high to low: b, a, c.

Upvotes: 0

Views: 77

Answers (1)

Nikita Skrebets
Nikita Skrebets

Reputation: 1538

Just use the array sort with a compare function.
The function should substract the lengths of the numbers property of objects.
More info: Array.sort() on MDN

test.sort((a, b) => b.numbers.length - a.numbers.length)

Upvotes: 5

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