s10-poisson-distribution-1.js

function processData(input) {
  input = input.split('\n')

  let l = parseFloat(input[0]),
    k = parseFloat(input[1])

  //Enter your code here
  function factorial(n) {
    if (n <= 1)
      return 1

    for (let i = n; i-- > 1;)
      n *= i

    return n
  }

  function poissonDistribution(l, k) {
    return (Math.pow(l, k) * Math.pow(Math.E, -l)) / factorial(k)
  }

  console.log(poissonDistribution(l, k).toFixed(3))
}

processData(`2.5
5`)