Sum of a sequence

Sum of a sequenceCodewars

Approach

Congruence modulo (article) | Cryptography | Khan AcademyKhan Academy

Solution

JavaScript

const sequenceSum = (begin, end, step, sum = 0) => {
  while (begin <= end) {
    sum += begin;
    begin += step;
  }
  
  return sum;
};

Python

def sequence_sum(begin, end, step):
    return sum([i for i in range(begin, end + 1, step)])