naughty-or-nice.md

Naughty or Nice? ^{7 Kyu}

^{LINK TO THE KATA - MATHEMATICS FUNDAMENTALS}

Description

In this kata, you will write a function that receives an array of string and returns a string that is either 'naughty' or 'nice'. Strings that start with the letters b, f, or k are naughty. Strings that start with the letters g, s, or n are nice. Other strings are neither naughty nor nice.

If there is an equal amount of bad and good actions, return 'naughty'

Examples:

bad_actions = ['broke someone\'s window', 'fought over a toaster', 'killed a bug']
whatListAmIOn(bad_actions)
#-> 'naughty'
good_actions = ['got someone a new car', 'saved a man from drowning', 'never got into a fight']
what_list_am_i_on(good_actions)
#-> 'nice'
actions = ['broke a vending machine', 'never got into a fight', 'tied someone\'s shoes']
what_list_am_i_on(actions)
#-> 'naughty'

Solution

const whatListAmIOn = actions => {
  let naughtyCounter = 0
  let niceCounter = 0

  for (let i = 0; i < actions.length; i++) {
    const firstLetter = actions[i][0].toLowerCase()

    if (firstLetter === 'b' || firstLetter === 'f' || firstLetter === 'k') {
      naughtyCounter++
    }

    if (firstLetter === 'g' || firstLetter === 's' || firstLetter === 'n') {
      niceCounter++
    }
  }

  return niceCounter > naughtyCounter ? 'nice' : 'naughty'
}