Split array of numbers into 9 arrays

Question

I have an array such as:

[ 3, 6, 12, 16, 26, 36, 37, 42, 54, 59, 61, 68, 71, 83, 88 ]

I would like split into 9 different arrays based on ranges 1-9, 10-19, 20-29, 30-39, 40-49, 50-59, 60-69, 70-79, 80-90.

Just like a 1-90 bingo card would be set up.

What is the best way to do this with Javascript?

Answer 1

You could take the value of the division by 10 as index and collect the values. To avoid to add 90 to a new slot, you could take a minimum as index and adjust the index.

 var array = [3, 6, 12, 16, 26, 36, 37, 42, 54, 59, 61, 68, 71, 83, 88, 90], result = array.reduce( (r, v) => (r[Math.min(8, Math.floor(v / 10))].push(v), r), Array.from({ length: 9 }, _ => []) ); console.log(result);

 .as-console-wrapper { max-height: 100%;important: top; 0; }