03. Plant Discovery Final Exam
Условието на задачата пише ясно : Note: If any of the command is invalid, print "error"
Загубих един час, докато не ми казаха да погледна слидо.
И пак я докарах само до 60/100.
function solve(arr) {
let n = arr.shift()
let obj = {}
let countRatings = {}
for (let i = 1; i <= n; i++) {
let line = arr.shift().split('<->')
let [plant, rare] = [...line]
rare = Number(rare)
if (obj.hasOwnProperty(plant)) {
obj[plant][0] += rare
} else {
obj[plant] = [rare]
}
}
line = arr.shift()
while (line != "Exhibition") {
line = line.split(': ')
let [comm, plantThings] = [...line]
plantThings = plantThings.split(' - ')
if(obj.hasOwnProperty(plantThings[0])){
if (comm === 'Rate') {
let [plant, rate] = [...plantThings]
rate = Number(rate)
if (obj[plant][1] == undefined) {
obj[plant].push(rate)
} else {
obj[plant][1] += rate
}
if (countRatings.hasOwnProperty(plant)) {
countRatings[plant] += 1
} else {
countRatings[plant] = 1
}
} else if (comm === 'Update') {
let [plant, rare] = [...plantThings]
rare = Number(rare)
obj[plant][0] = rare
} else if (comm === 'Reset') {
let [plant] = [...plantThings]
countRatings[plant] = 0
obj[plant][1] = 0
}
} else {
console.log('error');
}
line = arr.shift()
}
let array = Object.entries(obj)
for (let line of array) {
let i = array.indexOf(line)
let name = line[0]
let count = +countRatings[name]
if (count != 0) {
array[i][1][1] = +array[i][1][1] / count
}
}
array = array.sort((a, b) => b[1][0] - a[1][0] || b[1][1] - a[1][1])
console.log(`Plants for the exhibition:`)
for (const line of array) {
let name = line[0]
console.log(`- ${name}; Rarity: ${line[1][0]}; Rating: ${(line[1][1]).toFixed(2)}`)
}
}