--description--

Given an integer representing the size of your farm field, and "acres" or "hectares" representing the unit for the size of your farm field, and a type of crop, determine how many plants of that type you can fit in your field.

• 1 acre equals 4046.86 square meters.
• 1 hectare equals 10,000 square meters.

Here's a list of crops that will be given as input and how much space a single plant takes:

Return the number of plants that fit in the field, rounded down to the nearest whole plant.

--hints--

getNumberOfPlants(1, "acres", "corn") should return 4046.

assert.equal(getNumberOfPlants(1, "acres", "corn"), 4046);

getNumberOfPlants(2, "hectares", "lettuce") should return 100000.

assert.equal(getNumberOfPlants(2, "hectares", "lettuce"), 100000);

getNumberOfPlants(20, "acres", "soybeans") should return 161874.

assert.equal(getNumberOfPlants(20, "acres", "soybeans"), 161874);

getNumberOfPlants(3.75, "hectares", "tomatoes") should return 150000.

assert.equal(getNumberOfPlants(3.75, "hectares", "tomatoes"), 150000);

getNumberOfPlants(16.75, "acres", "tomatoes") should return 271139.

assert.equal(getNumberOfPlants(16.75, "acres", "tomatoes"), 271139);

--seed--

--seed-contents--

function getNumberOfPlants(fieldSize, unit, crop) {

  return fieldSize;
}

--solutions--

function getNumberOfPlants(fieldSize, unit, crop) {
  const cropSpace = {
    corn: 1,
    wheat: 0.1,
    soybeans: 0.5,
    tomatoes: 0.25,
    lettuce: 0.2
  };

  let fieldInSqM = unit === "acres" ? fieldSize * 4046.86 : fieldSize * 10000;

  return Math.floor(fieldInSqM / cropSpace[crop.toLowerCase()]);
}