Array Chunking

Directions

Given an array and chunk size, divide the array into many subarrays where each subarray is of length size.

Examples:

chunk([1, 2, 3, 4], 2) --> [[ 1, 2], [3, 4]]

chunk([1, 2, 3, 4, 5], 2) --> [[ 1, 2], [3, 4], [5]]

chunk([1, 2, 3, 4, 5, 6, 7, 8], 3) --> [[ 1, 2, 3], [4, 5, 6], [7, 8]]

chunk([1, 2, 3, 4, 5], 4) --> [[ 1, 2, 3, 4], [5]]

chunk([1, 2, 3, 4, 5], 10) --> [[ 1, 2, 3, 4, 5]]

Solutions

• Solution #2

    function chunk(array, size) {
      const chunked = [];
  
      for (let element of array) {
        const last = chunked[chunked.length - 1];
        if (!last || last.length === size) {
          chunked.push([element]);
        } else {
          last.push(element);
        }
      }
      
      return chunked;
    }