How to create groups and allocate a quantity per group depending on maximum value per group?

Question

I am trying to create a function that creates groups and allocates a quantity per group, depending on the user input.

For example:

// Input
User input: 150

// Rule
Maximum quantity per group: 100

// Created groups
Group 1: { quantity: 100 }
Group 2: { quantity: 50 }

Goal

This is my desired outcome:

[{ quantity: 100 }, { quantity: 50 }]

What I have tried

function group(input, maximum) {
  let arr = (new Array(Math.floor(input / maximum))).fill(maximum);

  input % maximum && arr.push(input % maximum);

  console.log(arr);
}

group(150, 100);

Output

This will return me: [100, 50].

Now I tried implementing this to output me an object:

function group(input, maximum) {
  let arr = (new Array({quantity: Math.floor(input / maximum)})).fill(maximum);

  input % maximum && arr.push({quantity: input % maximum});

  console.log(arr);
}

group(150, 100);

Output

This returns me: [100, { "quantity": 50 }].

quantity is only added to the second element, but not the first.

Question

How can I fix this, so all the array elements is an object?

Answer 1

As noted in the comment, the question is very close to the desired objective.

Here's one possible way to achieve the desired target structure.

function group(input, maximum) {
  let arr = (new Array(Math.floor(input / maximum))).fill(maximum);

  input % maximum && arr.push(input % maximum);
  
  // instead of using "arr", simply transform it
  // by putting the number as an object with prop-name "quantity"
  console.log(arr.map(quantity => ({ quantity })));
}

group(150, 100);

Explanation added as inline comments in the above snippet.