Remote Work for Class (Dec 15th, 2015)

countdown.js

const countdown = (n) => {
  console.log(n)
  if (n === 0) { return }
  countdown(n - 1)
}

countdown(5)

factorial.js

function* factorialGenerator() {
  let sequence = {}
  let key = 0
  while (true) {
    let length = Object.keys(sequence).length;
    if (length <= 1) {
      sequence[key] = 1
    } else {
      let nextNumber = length * length - 1;
      sequence[key] = nextNumber
    }
    key++
    yield sequence
  }
}

const factorial = factorialGenerator();

factorial.next().value
factorial.next().value
factorial.next().value
factorial.next().value
factorial.next().value
factorial.next().value
factorial.next().value
factorial.next().value

fib.js

const fib = (n, Ar) => {
  let fibAr = Ar || [1, 1]
  let fibArLength = fibAr.length
  if (n === 1) { console.log([1]) }
  else if (n === 0) { console.log(fibAr) }
  else if (n === 2) { console.log(fibAr) }
  else {
    let some = fibAr[fibArLength - 1] + fibAr[fibArLength - 2]
    fibAr.push(some)
    fib(n - 1, fibAr)
  }
}

fib(1)
fib(2)
fib(3)
fib(5)