#2777 - Date Range Generator

Medium • View on LeetCode • View on GitHub

Problem Description

Given a start date start, an end date end, and a positive integer step, return a generator object that yields dates in the range from start to end inclusive.

The value of step indicates the number of days between consecutive yielded values.

All yielded dates must be in the string format YYYY-MM-DD.

Solution

/**
 * @param {string} start
 * @param {string} end
 * @param {number} step
 * @yields {string}
 */
var dateRangeGenerator = function* (start, end, step) {
  const startDate = new Date(start);
  const endDate = new Date(end);
  const currentDate = new Date(startDate);

  while (currentDate <= endDate) {
    yield currentDate.toISOString().split('T')[0];
    currentDate.setDate(currentDate.getDate() + step);
  }
};