code: function random$1(data, K) {
                  const rand = new Picker$1(data);
                  var ans = new Array(K);
  
                  for (var i = 0; i < K; ++i) {
                      ans[i] = rand.pick();
                  }
                  return ans;
              }
docs: Choose K different random points from the original data
  @ignore
  @param {Array<Array<Number>>} data - Points in the format to cluster [x,y,z,...]
  @param {Number} K - Number of clusters
  @return {Array<Array<Number>>} - Initial random points