使用javascript将单个数组转换为多维数组

Question

I came across an exercise that wants me to write a function that splits an array (first argument) into groups the length of size (second argument) and returns them as a multidimensional array. Here is the starter code that is provided.

function chunk(arr, size) {
  // Break it up.
  return arr;
}

chunk(['a', 'b', 'c', 'd'], 2);

so in this particular case, the returned array should be [[a,b],[c,d]]. I have tried using array.slice, and array.splice, and array.push but I get nothing even close to being the right answer. If anybody can help shed some light on this issue, I would be very appreciative. I have been stuck on this for days and it's getting really frustrating. Thanks.

Answer 1

Not the best code I've ever written but here you go:

function chunk(arr, size) {
    mda = []    
    for (i = 0; i+size < arr.length; i = i + size) { 
        mda.push(arr.slice(i,i+size));
    }
         mda.push(arr.slice(i));
    return mda
}
chunk(['a', 'b', 'c', 'd'], 2)