Method arange

__test__/theorem.js:1330–1337

(start, end, step, offset)

  	return this.arange(start, end, step);
  }
  arange(start, end, step, offset) {
  	const len = (Math.abs(end - start) + ((offset || 0) * 2)) / (step || 1) + 1;
  	const direction = start < end ? 1 : -1;
  	const startingPoint = start - (direction * (offset || 0));
  	const stepSize = direction * (step || 1);
  
  	return Array(len).fill(0).map((_, index) => startingPoint + (stepSize * index));
  }
  range(n) {
  	return this.arange(0, n, 1);
  }