sum of a sequence of integers(codewars)

by Alexey Zakharov

JavaScript

const sequenceSum = (begin, end, step) => {
  if(begin > end) return 0;
  var sum = 0;
  for (begin; end >= begin; begin = begin + step) {
	  sum += begin;
  }
  return sum;
};


console.log(sequenceSum(2,2,2));
console.log(sequenceSum(1, 5, 3));
console.log(sequenceSum(1,5,1));
console.log(sequenceSum(2,6,2));