From 204a475a9e71826240b53ba69671d5d5ed9f8f02 Mon Sep 17 00:00:00 2001
From: Alym Aleksey | work <alym.aleksey@gmail.com>
Date: Thu, 10 Dec 2020 21:17:18 +0300
Subject: [PATCH] All tasks

---
 Exercises/1-let.js       |  2 +-
 Exercises/2-const.js     |  2 +-
 Exercises/3-hello.js     |  2 +-
 Exercises/4-range.js     |  8 +++++++-
 Exercises/5-range-odd.js | 10 +++++++++-
 Exercises/6-calculate.js | 16 ++++++++++++----
 Exercises/7-objects.js   | 11 ++++++++++-
 Exercises/8-create.js    |  2 +-
 Exercises/9-array.js     | 11 +++++++++--
 Exercises/a-hash.js      |  7 +++++--
 10 files changed, 56 insertions(+), 15 deletions(-)

diff --git a/Exercises/1-let.js b/Exercises/1-let.js
index d705443..a3c59bf 100644
--- a/Exercises/1-let.js
+++ b/Exercises/1-let.js
@@ -1,5 +1,5 @@
 'use strict';
 
-let name = undefined;
+let name = 'Aleksey';
 
 module.exports = { name };
diff --git a/Exercises/2-const.js b/Exercises/2-const.js
index 5512738..465e192 100644
--- a/Exercises/2-const.js
+++ b/Exercises/2-const.js
@@ -1,5 +1,5 @@
 'use strict';
 
-const year = undefined;
+const year = 1988;
 
 module.exports = { year };
diff --git a/Exercises/3-hello.js b/Exercises/3-hello.js
index a597391..f36ff5f 100644
--- a/Exercises/3-hello.js
+++ b/Exercises/3-hello.js
@@ -1,5 +1,5 @@
 '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..3c7e344 100644
--- a/Exercises/4-range.js
+++ b/Exercises/4-range.js
@@ -1,5 +1,11 @@
 'use strict';
 
-const range = null;
+const range = (start, end) => {
+  const res = [];
+  for (let i = start; i <= end; i += 1) {
+    res.push(i);
+  }
+  return res;
+};
 
 module.exports = { range };
diff --git a/Exercises/5-range-odd.js b/Exercises/5-range-odd.js
index 54bb5b4..2e69e3a 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 res = [];
+
+  for (let i = start; i <= end; i += 1) {
+    if (i % 2) res.push(i);
+  }
+
+  return res;
+};
 
 module.exports = { rangeOdd };
diff --git a/Exercises/6-calculate.js b/Exercises/6-calculate.js
index dfecf6b..31ab208 100644
--- a/Exercises/6-calculate.js
+++ b/Exercises/6-calculate.js
@@ -1,11 +1,19 @@
 'use strict';
 
-const square = null;
+const square = n => n * n;
 
-const cube = null;
+const cube = n => n ** 3;
 
-const average = null;
+const average = (a, b) => (a + b) / 2;
 
-const calculate = null;
+const calculate = () => {
+  const res = [];
+
+  for (let i = 0; i < 10; i += 1) {
+    res.push(average(square(i), cube(i)));
+  }
+
+  return res;
+};
 
 module.exports = { square, cube, average, calculate };
diff --git a/Exercises/7-objects.js b/Exercises/7-objects.js
index 0920026..205806c 100644
--- a/Exercises/7-objects.js
+++ b/Exercises/7-objects.js
@@ -1,5 +1,14 @@
 'use strict';
 
-const fn = null;
+const fn = () => {
+  let obj = { name: 'name' };
+  const obj2 = { name: 'name' };
+
+  obj.name = 'pavel';
+  obj2.name = 'pavel';
+
+  const obj3 = { name: 'Sergey' };
+  obj = obj3;
+};
 
 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..e4a861d 100644
--- a/Exercises/9-array.js
+++ b/Exercises/9-array.js
@@ -1,7 +1,14 @@
 'use strict';
 
-const phonebook = null;
+const phonebook = [
+  { name: 'Aleksey', phone: '1234567890' },
+  { name: 'Pavel', phone: '0987654321' },
+];
 
-const findPhoneByName = null;
+const findPhoneByName = name => {
+  for (const p of phonebook) {
+    return p.name === name ? p.phone : null;
+  }
+};
 
 module.exports = { phonebook, findPhoneByName };
diff --git a/Exercises/a-hash.js b/Exercises/a-hash.js
index 466c69a..2738bf9 100644
--- a/Exercises/a-hash.js
+++ b/Exercises/a-hash.js
@@ -1,7 +1,10 @@
 'use strict';
 
-const phonebook = null;
+const phonebook = {
+  Aleksey: '1234567890',
+  Pavel: '0987654321'
+};
 
-const findPhoneByName = null;
+const findPhoneByName = name => phonebook[name];
 
 module.exports = { phonebook, findPhoneByName };