array chunk javascript

1function splitArrayIntoChunksOfLen(arr, len) {
2  var chunks = [], i = 0, n = arr.length;
3  while (i < n) {
4    chunks.push(arr.slice(i, i += len));
5  }
6  return chunks;
7}
8var alphabet=['a','b','c','d','e','f'];
9var alphabetPairs=splitArrayIntoChunksOfLen(alphabet,2); //split into chunks of two

1let input = [1,2,3,4,5,6,7,8,9];
2let chunked = []
3let size = 2;
4
5for (let i = 0;  i < input.length; i += size) {
6  chunked.push(input.slice(i, i + size))
7}
8console.log(chunked)

1//#Source https://bit.ly/2neWfJ2 
2const chunk = (arr, size) =>
3  Array.from({ length: Math.ceil(arr.length / size) }, (v, i) =>
4    arr.slice(i * size, i * size + size)
5  );
6console.log(chunk([1, 2, 3, 4, 5], 2));
7
8

1function __chunk(array, size) {
2  let chunkArray = [];
3  return function _chunk(chunk = array) {
4    if (chunk.length < size) {
5      return chunkArray.push(chunk) && chunkArray;
6    }
7    return chunkArray.push(chunk.slice(0, size)) && _chunk(chunk.slice(size));
8  };
9}

1let input = [1,2,3,4,5,6,7,8];
2let chunked = []
3let size = 2;
4
5Array.from({length: Math.ceil(input.length / size)}, (val, i) => {
6  chunked.push(input.slice(i * size, i * size + size))
7})
8
9console.log(chunked);

1const tips_vectorDistance = (x, y) =>
2  Math.sqrt(x.reduce((acc, val, i) => acc + Math.pow(val - y[i], 2), 0));
3console.log(tips_vectorDistance([15, 0, 5], [30, 0, 20]));
4