From 4be553984a91817e7d7226788c7f3e536d611702 Mon Sep 17 00:00:00 2001
From: Alex <Sa6aFed@localhost.localdomain>
Date: Mon, 10 Aug 2020 16:44:13 +0300
Subject: [PATCH] LABS 1-9, a

---
 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 | 15 +++++++++++----
 Exercises/7-objects.js   | 13 +++++++++++--
 Exercises/8-create.js    |  2 +-
 Exercises/9-array.js     | 11 +++++++++--
 Exercises/a-hash.js      |  7 +++++--
 10 files changed, 56 insertions(+), 16 deletions(-)

diff --git a/Exercises/1-let.js b/Exercises/1-let.js
index d705443..ba58246 100644
--- a/Exercises/1-let.js
+++ b/Exercises/1-let.js
@@ -1,5 +1,5 @@
 'use strict';
 
-let name = undefined;
+let name = 'Sasha';
 
 module.exports = { name };
diff --git a/Exercises/2-const.js b/Exercises/2-const.js
index 5512738..b6433ef 100644
--- a/Exercises/2-const.js
+++ b/Exercises/2-const.js
@@ -1,5 +1,5 @@
 'use strict';
 
-const year = undefined;
+const year = 1983;
 
 module.exports = { year };
diff --git a/Exercises/3-hello.js b/Exercises/3-hello.js
index a597391..369cf3a 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(`Hi ${name}!`);
 
 module.exports = { hello };
diff --git a/Exercises/4-range.js b/Exercises/4-range.js
index 31bd852..48e7586 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 arr = [];
+  for (let i = start; i <= end; i++) {
+    arr.push(i);
+  }
+  return arr;
+};
 
 module.exports = { range };
diff --git a/Exercises/5-range-odd.js b/Exercises/5-range-odd.js
index 54bb5b4..c275934 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 arr = [];
+  for (let i = start; i <= end; i++) {
+    if (i % 2 !== 0) {
+      arr.push(i);
+    }
+  }
+  return arr;
+};
 
 module.exports = { rangeOdd };
diff --git a/Exercises/6-calculate.js b/Exercises/6-calculate.js
index dfecf6b..fdd875c 100644
--- a/Exercises/6-calculate.js
+++ b/Exercises/6-calculate.js
@@ -1,11 +1,18 @@
 'use strict';
 
-const square = null;
+const square = x => x * x;
 
-const cube = null;
+const cube = x => x ** 3;
 
-const average = null;
+const average = (a, b) => (a + b) / 2;
 
-const calculate = null;
+const calculate = () => {
+  const arr = [];
+  for (let i = 0; i <= 9; i++) {
+    const av = average(square(i), cube(i));
+    arr.push(av);
+  }
+  return arr;
+};
 
 module.exports = { square, cube, average, calculate };
diff --git a/Exercises/7-objects.js b/Exercises/7-objects.js
index 0920026..8488b58 100644
--- a/Exercises/7-objects.js
+++ b/Exercises/7-objects.js
@@ -1,5 +1,14 @@
 'use strict';
 
-const fn = null;
-
+const fn = () => {
+  const objOne = { name: 'One' };
+  let objTwo = { name: 'Two' };
+  objOne.name = 'something';
+  objTwo.name = 'something too';
+  //objOne = {other: 3} ;
+  objTwo = { otherTwo: 2 };
+  /*objOne - const => другой объект присвоить нельзя,
+  изменять поля можно у обоих объектов*/
+};
+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..315d269 100644
--- a/Exercises/9-array.js
+++ b/Exercises/9-array.js
@@ -1,7 +1,14 @@
 'use strict';
 
-const phonebook = null;
+const phonebook = [
+  { name: 'Marcus', phone: '+380445554433' },
+  { name: 'Vasya', phone: '+38454545454' },
+];
 
-const findPhoneByName = null;
+const findPhoneByName = name => {
+  for (const rec of phonebook) {
+    if (rec.name === name) return rec.phone;
+  }
+};
 
 module.exports = { phonebook, findPhoneByName };
diff --git a/Exercises/a-hash.js b/Exercises/a-hash.js
index 466c69a..8898ed4 100644
--- a/Exercises/a-hash.js
+++ b/Exercises/a-hash.js
@@ -1,7 +1,10 @@
 'use strict';
 
-const phonebook = null;
+const phonebook = {
+  Marcus: '+380445554433',
+  Vasya: '+38454545454',
+};
 
-const findPhoneByName = null;
+const findPhoneByName = name => phonebook[name];
 
 module.exports = { phonebook, findPhoneByName };