// ================================================================================
// You will be writing a series of functions beneath each block of comments below.
// Tackle each function one at a time. You may move on to a new exercise and return
// later. Run the code and the console to the right will tell you if your function
// is successfully passing the tests.
// ================================================================================


/*
  Define a function named `kmToMiles` that receives one parameter:
    1) km - type: number
  The function should return a number in miles, rounded down to nearest integer.

  HINT: There are 1.6km in 1 mile.
  HINT: What method on Javascript's Math object can round decimals down to nearest whole number?
*/
function kmToMiles(km){

    var miles = km/1.6;


   return Math.floor(miles);
}

/*
  Define a function named `countLetters` that receives two parameters:
    1) sentence  - type: string
    2) character - type: string
  The function should return a count of every `character` present in `sentence`.

  HINT: You can access a single character in a string just like accessing an element in an array - `myString[3]` would access the fourth character
*/

function countLetters (sentence,character){

  var counter=0;

  for(var i=0;i < sentence.length; i++){



    if(sentence[i] === character){

      counter+=1;
    }


  }

  return counter;


}


/*
  Define a function named `middleElement` that receives one parameter:
    1) items - type: array
  The function should return the element present in the middle index. If
  the array contains an even number of elements, return the item in the
  first half of the array closest to the middle.

  HINT: You can use the expression `n % 2 === 0` to check if `n` is an even number
*/

function middleElement(items){

     if(items.length%2 === 0){

       return items[(items.length*0.5)-1];

     } else {


        return items[Math.round(items.length*0.5)-1];

     }




}



/*
  Define a function named `rightToVote` that receives one parameter:
    1) person - type: object
  The function should check the `age` property on `person`. If it is 18 or older,
  return true. Otherwise, return false. If `age` is not a number, throw an error.

  HINT: The `typeof` operator can tell you what data type a variable is
*/

function rightToVote(person){


   if (typeof person.age !== 'number'){

     throw 'not a number!';
   }

      if(person.age >= 18){

        return true;
      } else {

        return false;
      }



}




/*
  Define a factory function `createStudent` that receives two parameters:
    1) name - type: string
    2) location - type: string
  This factory should return an object that includes the provided `name` and `location`
  properties and also has a `describe` method that returns the string: "Hello, I
  am {name} and I live in {location}."

  HINT: You will want to use the `this` keyword
*/



function createStudent(name,location){


   var student = {
     name: name,
     location: location,
     describe: function(){

       return `Hello, I am ${this.name} and I live in ${this.location}.`;


     }

   }

  return student;


}