diff --git a/phone-book.js b/phone-book.js
index 69fb468..7d8c3e6 100644
--- a/phone-book.js
+++ b/phone-book.js
@@ -9,16 +9,29 @@ exports.isStar = true;
 /**
  * Телефонная книга
  */
-var phoneBook;
+var phoneBook = [];
 
 /**
  * Добавление записи в телефонную книгу
  * @param {String} phone
  * @param {String} name
  * @param {String} email
+ * @returns {Boolean}
  */
 exports.add = function (phone, name, email) {
+    var validPhone = /\d{10}/;
+    var validEmail = /.*@.*/;
+    phone = String(phone);
+    var isValid = (phone.length === 10) && Boolean(name) && validPhone.test(phone);
+    isValid = isValid && phoneBook.every(elem => elem.phone !== phone);
+    isValid = isValid && (!(email) || validEmail.test(email));
+    if (!isValid) {
+        return false;
+    }
+    email = email ? email : '';
+    phoneBook.push({ phone: phone, name: name, email: email });
 
+    return true;
 };
 
 /**
@@ -26,27 +39,79 @@ exports.add = function (phone, name, email) {
  * @param {String} phone
  * @param {String} name
  * @param {String} email
+ * @returns {Bollean}
  */
 exports.update = function (phone, name, email) {
+    phone = String(phone);
+    var validEmail = /.*@.*/;
+    phone = String(phone);
+    var index = phoneBook.findIndex(elem => elem.phone === phone);
+    if ((index === -1) || !(name) || !(!(email) || validEmail.test(email))) {
+        return false;
+    }
+    phoneBook[index].name = name;
+    phoneBook[index].email = email ? email : '';
 
+    return true;
 };
 
 /**
  * Удаление записей по запросу из телефонной книги
  * @param {String} query
+ * @returns {Integer}
  */
 exports.findAndRemove = function (query) {
+    if (!(query)) {
+        return 0;
+    }
+    query = String(query);
+    var oldLength = phoneBook.length;
+    var result = phoneBook.filter(function (elem) {
+        var isFind = (query === '*') || (elem.phone.indexOf(query) + 1);
+        isFind = isFind || (elem.name.indexOf(query) + 1);
+        isFind = isFind || (String(elem.email).indexOf(query) + 1);
 
+        return !isFind;
+    });
+    phoneBook = result;
+
+    return oldLength - phoneBook.length;
 };
 
 /**
  * Поиск записей по запросу в телефонной книге
  * @param {String} query
+ * @returns {Array}
  */
 exports.find = function (query) {
+    var result = [];
+    if (!(query)) {
+        return [];
+    }
+    query = String(query);
+    result = phoneBook.map(function (elem) {
+        var isFind = (query === '*') || (elem.phone.indexOf(query) + 1);
+        isFind = isFind || (elem.name.indexOf(query) + 1) || (elem.email.indexOf(query) + 1);
+        if (isFind) {
+            return correctNote(elem.name, elem.phone, elem.email);
+        }
+
+        return '';
+    }, this);
 
+    return result.sort();
 };
 
+
+function correctNote(name, phone, email) {
+    var correctPhone = '+7 (' + phone.slice(0, 3) + ') ' + phone.slice(3, 6);
+    correctPhone += '-' + phone.slice(6, 8) + '-' + phone.slice(8, 10);
+    var result = name + ', ' + correctPhone;
+    result = email ? result + ', ' + email : result;
+
+    return result;
+}
+
 /**
  * Импорт записей из csv-формата
  * @star
@@ -57,6 +122,24 @@ exports.importFromCsv = function (csv) {
     // Парсим csv
     // Добавляем в телефонную книгу
     // Либо обновляем, если запись с таким телефоном уже существует
+    var notes = csv.split('\n');
+    var validPhone = /\d{10}/;
+    var count = 0;
+    notes.forEach(function (element) {
+        var [name, phone, email] = element.split(';');
+        var isValid = phone.length === 10 && validPhone.test(phone) && (name);
+        if (isValid) {
+            var index = phoneBook.findIndex(elem => elem.phone === phone);
+            count++;
+            if ((index + 1)) {
+                phoneBook[index].name = name;
+                phoneBook[index].email = email ? email : '';
+            } else {
+                email = email ? email : '';
+                phoneBook.push({ phone: phone, name: name, email: email });
+            }
+        }
+    }, this);
 
-    return csv.split('\n').length;
+    return count;
 };