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Володин Артем, K3320 #7

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2 changes: 1 addition & 1 deletion index.html
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Original file line number Diff line number Diff line change
Expand Up @@ -3,7 +3,7 @@
<head>
<title>Start Page &mdash; JavaScript Beginner Course 2017</title>
<meta charset="utf-8">
<!-- <script src="scripts/script.js" defer></script> -->
<script src="scripts/tasks.js" defer></script>
</head>
<body>
<h1 onclick="this.style.color = 'red';">Hi there! Let's start to learn JavaScript.</h1>
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74 changes: 72 additions & 2 deletions scripts/tasks.js
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Original file line number Diff line number Diff line change
Expand Up @@ -2,9 +2,15 @@
// а возвращать – массив значений одного из полей (отсортированных в порядке возрастания):
// ------------------------

function getFieldValues(arr, name) {
return arr.map(function(value) {
return value[name];
}).sort();
}

let usersData = [
{ 'user' : 'Alex', 'password' : 'MyNameIsAlex' },
{ 'user' : 'Bob', 'password' : 'MyNAmeIsBob' }
{ 'user' : 'Bob', 'password' : 'MyNameIsBob' }
];
console.log(getFieldValues(usersData, 'user')); // --> ['Alex', 'Bob']

Expand All @@ -14,8 +20,14 @@ console.log(getFieldValues(usersData, 'user')); // --> ['Alex', 'Bob']
// 2) Написать функцию, фильтрующую массив с использованием предиката:
// ------------------------

function isEven(x) {
return x % 2 == 0;
}
function filter(arr, func) {
return arr.filter(func);
}

let numbers = [1, 2, 3, 5, 8, 13, 21, 34, 55];
function isEven(x) {/* Проверка на чётность */}
console.log(filter(numbers, isEven)); // --> [2, 8, 34]

// ------------------------
Expand All @@ -25,6 +37,18 @@ console.log(filter(numbers, isEven)); // --> [2, 8, 34]
// вывести те слова (по одному разу), которые встречаются в обоих строках
// ------------------------

function findSimilarWords(str1, str2) {
var arr1 = str1.split(' ');
var arr2 = str2.split(' ');
var result = [];

arr1.forEach(function(item) {
if (arr2.includes(item) && !result.includes(item))
result.push(item);
});
return result;
}

var firstLongString = 'Load up on guns and bring your friends it is fun to lose and to pretend';
var secondLongString = 'She is over bored and self assured oh no I know a dirty word';
console.log(findSimilarWords(firstLongString, secondLongString)); // --> ['and', 'is'];
Expand All @@ -37,6 +61,41 @@ console.log(findSimilarWords(firstLongString, secondLongString)); // --> ['and',
// IP-адрес (4 октета, <= 255), а затем выводить сетевой и широковещательный адреса:
// ------------------------

function generateBroadcastAndNetworsAddresses(IpAddress, bitmask) {
if (typeof IpAddress != 'string')
return 'IpAddress ' + IpAddress + ' must be a string';

var arr = IpAddress.split('.');
if (arr.length != 4)
return 'IpAddress ' + IpAddress + ' must consist of 4 octets';

if (arr.some(function(num) {
return isNaN(parseInt(num)) || num < 0 || num > 255;
})) return 'IpAddress ' + IpAddress + ' must consist of numbers from 0 to 255';

var IpAddressFull = 0;
for (var i = 0; i < 4; i++) {
IpAddressFull += arr[i] << (3 - i) * 8;
}

var subnetMaskFull = Math.pow(2, 32) - Math.pow(2, 32 - bitmask);

var networkFull = IpAddressFull & subnetMaskFull;
var broadcastFull = networkFull | ~subnetMaskFull;

var network = IPv4_intA_to_dotquadA(networkFull);
var broadcast = IPv4_intA_to_dotquadA(broadcastFull);

return 'Broadcast - ' + broadcast + ', Network - ' + network;
}
function IPv4_intA_to_dotquadA(num) {
var byte1 = (num >>> 24);
var byte2 = (num >>> 16) & 255;
var byte3 = (num >>> 8) & 255;
var byte4 = num & 255;
return byte1 + '.' + byte2 + '.' + byte3 + '.' + byte4;
}

var IpAddress = '10.223.98.2';
var subnetMask = 28;
console.log(generateBroadcastAndNetworsAddresses(IpAddress, subnetMask)); // Broadcast - 10.223.98.15, Network - 10.223.98.0
Expand All @@ -47,6 +106,17 @@ console.log(generateBroadcastAndNetworsAddresses(IpAddress, subnetMask)); // Bro
// 5) Соединить все массивы в один, не допуская повторения элементов (порядок не важен):
// ------------------------

function makeItClean(arr) {
var result = [];
arr.forEach(function(subarr) {
subarr.forEach(function(item) {
if (!result.includes(item))
result.push(item);
});
});
return result;
}

var totalMessArray = [['a', 1, true], [true, 99, 'aa', undefined], ['1']];
console.log(makeItClean(totalMessArray)); // --> ['a', 'aa', 1, '1', undefined, true];

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