JS Excersises

fib.js

//1, 1, 2, 3, 5, 8, 13, 21, 34, 55, 89, 144, ...

function fibonacci(n) {
  var a = 1;
  var b = 0;
  var temp;
  while (n >= 0) {
    temp = a;
    a = a + b;
    b = temp;
    n--;
  }
  return b
}

//console.log(fibonacci(12));

Array.prototype.aIndexOf = function(element) {
  for (var i = 0; i < this.length; i++)
    if (this[i] === element) {
      return i;
    }
    return -1;
}

var arr = [1, 2, 4, 5, 9, 10, 12];

//console.log(arr.aIndexOf(4));

function createArrBy3s(n) {
  var ret = [];
  var sv = 0;
  while(n >=0) {
    if(sv  % 3 === 0) {
      ret.push(sv);
      console.log(ret);
      n--;
    }
    sv++
  }
  return ret;
}

function highestCommonDivisor(n1, n2) {

}

var sample2 = [1, 2, [3, 4], 7, [9, 10], 12];

function flattenArray(arr) {
  return arr.reduce(function(a, b) {
    console.log(a);
    return a.concat(b);
  }, []);
}

var flat = flattenArray(sample2)

console.log(flat);

function isPrime(n) {
  if(n === 1) {
    return true;
  }
  var divisor = 2;
  while (n > divisor) {
    if (n % divisor === 0) {
    return false;
  }
  divisor++;
}
return true;

}

console.log(isPrime(137));

var sample = [1,2,3,4,5];

function duplicate(arr) {
  return sample.concat(sample);
}

console.log(duplicate(sample));


//console.log(createArrBy3s(24));

var sample3 = ['taylor', 'George'];

var dude = sample3.map(function(x) {
  return x + '.dude';
});
console.log(dude);

fizzbuzz.js

for(var i = 0; i < 100; i++) {
  if(i % 3 === 0 && i % 5 === 0) {
    console.log(i + ' fizzbuzz');
  } else if (i % 5 === 0) {
    console.log(i + ' buzz');
  } else if (i % 3 === 0) {
    console.log(i + ' fizz');
  }

}

oo.js

function Person(name, email, locale) {
  this.name = name;
  this.email = email;
  this.locale = locale

  this.greet = function() {
    console.log('Hello ' + name);
  }
}

Person.prototype.assignWeapon = function() {
 var weapons = ['nunchuck', 'sword', 'axe', 'brass knuckles', 'chain', 'spear'];
 function getRandomInt() {
   var min = Math.floor(0);
   var max = Math.ceil(weapons.length);
   return Math.floor(Math.random() * (max - min) + min);
 }
 var token = getRandomInt();
 console.log(token);
 this.weapon = weapons[token];
};

Person.prototype.countTo100byPrime();


var sally = new Person('Sally Mae', 'testing@test.com', 'Seattle');

sally.greet();

sally.assignWeapon();
console.log(sally.weapon);