From b84853c8080e7963b16cd1cb5778e704836eaf76 Mon Sep 17 00:00:00 2001
From: vladimirvikulin <v.vikulin.im11@kpi.ua>
Date: Wed, 22 Sep 2021 16:37:25 +0300
Subject: [PATCH] Lab2  Reusable

---
 .eslintrc.json           |  2 +-
 Exercises/1-let.js       |  2 +-
 Exercises/2-const.js     |  2 +-
 Exercises/3-hello.js     |  4 +++-
 Exercises/4-range.js     |  9 ++++++++-
 Exercises/5-range-odd.js | 10 +++++++++-
 Exercises/6-calculate.js | 15 +++++++++++----
 Exercises/7-objects.js   | 12 +++++++++++-
 Exercises/8-create.js    |  2 +-
 Exercises/9-array.js     | 13 +++++++++++--
 Exercises/a-hash.js      |  8 ++++++--
 package.json             |  2 +-
 12 files changed, 64 insertions(+), 17 deletions(-)

diff --git a/.eslintrc.json b/.eslintrc.json
index 7bb3f20..1deea4a 100644
--- a/.eslintrc.json
+++ b/.eslintrc.json
@@ -18,7 +18,7 @@
     ],
     "linebreak-style": [
       "error",
-      "unix"
+      "windows"
     ],
     "quotes": [
       "error",
diff --git a/Exercises/1-let.js b/Exercises/1-let.js
index d705443..441a467 100644
--- a/Exercises/1-let.js
+++ b/Exercises/1-let.js
@@ -1,5 +1,5 @@
 'use strict';
 
-let name = undefined;
+let name = 'Vladimir';
 
 module.exports = { name };
diff --git a/Exercises/2-const.js b/Exercises/2-const.js
index 5512738..9c247d3 100644
--- a/Exercises/2-const.js
+++ b/Exercises/2-const.js
@@ -1,5 +1,5 @@
 'use strict';
 
-const year = undefined;
+const year = 2004;
 
 module.exports = { year };
diff --git a/Exercises/3-hello.js b/Exercises/3-hello.js
index a597391..d9bde71 100644
--- a/Exercises/3-hello.js
+++ b/Exercises/3-hello.js
@@ -1,5 +1,7 @@
 'use strict';
 
-const hello = null;
+const hello = (name) => {
+  console.log(`Hello ${name}`);
+};
 
 module.exports = { hello };
diff --git a/Exercises/4-range.js b/Exercises/4-range.js
index 31bd852..ebdd706 100644
--- a/Exercises/4-range.js
+++ b/Exercises/4-range.js
@@ -1,5 +1,12 @@
 'use strict';
 
-const range = null;
+const range = (start, end) => {
+  const array = [];
+  if (array.length < 0) return [];
+  for (let i = start; i <= end; i++) {
+    array.push(i);
+  }
+  return array;
+};
 
 module.exports = { range };
diff --git a/Exercises/5-range-odd.js b/Exercises/5-range-odd.js
index 54bb5b4..0ff07cf 100644
--- a/Exercises/5-range-odd.js
+++ b/Exercises/5-range-odd.js
@@ -1,5 +1,13 @@
 'use strict';
 
-const rangeOdd = null;
+const rangeOdd = (start, end) => {
+  const array = [];
+  if (array.length < 0) return [];
+  for (let i = start; i <= end; i++) {
+    if (i % 2 !== 0)
+      array.push(i);
+  }
+  return array;
+};
 
 module.exports = { rangeOdd };
diff --git a/Exercises/6-calculate.js b/Exercises/6-calculate.js
index dfecf6b..d0f7e1f 100644
--- a/Exercises/6-calculate.js
+++ b/Exercises/6-calculate.js
@@ -1,11 +1,18 @@
 'use strict';
 
-const square = null;
+const square = (a) => a * a;
 
-const cube = null;
+const cube = (a) => a ** 3;
 
-const average = null;
+const average = (a, b) => (a + b) / 2;
 
-const calculate = null;
+const calculate = () => {
+  const array = [];
+  for (let i = 0; i <= 9; i++) {
+    const ave = average(square(i), cube(i));
+    array.push(ave);
+  }
+  return array;
+};
 
 module.exports = { square, cube, average, calculate };
diff --git a/Exercises/7-objects.js b/Exercises/7-objects.js
index 0920026..8373a35 100644
--- a/Exercises/7-objects.js
+++ b/Exercises/7-objects.js
@@ -1,5 +1,15 @@
 'use strict';
 
-const fn = null;
+const fn = () => {
+  let objectLet = { name: 'Vladimir' };
+  const objectConst = { name: 'Vladimir' };
+  objectLet.name = 'Sergey';
+  objectConst.name = 'Sergey';
+  const object = { name: 'Timur' };
+  objectLet = object;
+  //objectConst = object; - TypeError: Assignment to constant variable
+};
+
+fn();
 
 module.exports = { fn };
diff --git a/Exercises/8-create.js b/Exercises/8-create.js
index ac27ddd..f400582 100644
--- a/Exercises/8-create.js
+++ b/Exercises/8-create.js
@@ -1,5 +1,5 @@
 'use strict';
 
-const createUser = null;
+const createUser = (name, city) => ({ name, city });
 
 module.exports = { createUser };
diff --git a/Exercises/9-array.js b/Exercises/9-array.js
index 466c69a..1ba7abc 100644
--- a/Exercises/9-array.js
+++ b/Exercises/9-array.js
@@ -1,7 +1,16 @@
 'use strict';
 
-const phonebook = null;
+const phonebook = [
+  { name: 'John', phone: '+380669876420' },
+  { name: 'Vladimir', phone: '+380959546176' },
+  { name: 'Sergey', phone: '+380997865430' }
+];
 
-const findPhoneByName = null;
+const findPhoneByName = (name) => {
+  for (const k of phonebook) {
+    if (k.name === name)
+      return k.phone;
+  }
+};
 
 module.exports = { phonebook, findPhoneByName };
diff --git a/Exercises/a-hash.js b/Exercises/a-hash.js
index 466c69a..6929893 100644
--- a/Exercises/a-hash.js
+++ b/Exercises/a-hash.js
@@ -1,7 +1,11 @@
 'use strict';
 
-const phonebook = null;
+const phonebook = {
+  John: '+380669876420',
+  Vladimir: '+380959546176',
+  Sergey: '+380997865430'
+};
 
-const findPhoneByName = null;
+const findPhoneByName = (name) => phonebook[name];
 
 module.exports = { phonebook, findPhoneByName };
diff --git a/package.json b/package.json
index 147ac83..e4c1d7c 100644
--- a/package.json
+++ b/package.json
@@ -5,7 +5,7 @@
   "author": "Timur Shemsedinov <timur.shemsedinov@gmail.com>",
   "license": "MIT",
   "scripts": {
-    "test": "eslint ./Exercises; hpw",
+    "test": "eslint ./Exercises && hpw",
     "ci": "eslint ./Exercises && hpw"
   },
   "dependencies": {