#1 4 task aleksey prusevich

.travis.yml

@@ -1,3 +1,3 @@
 language: node_js
 node_js:
-  - "5.10.0"
+  - "12.18.2"

README.md

@@ -29,7 +29,7 @@ To start javascript assignments please follow the next steps:
   git commit -m "Update the links"
   git push origin master
 ```
-* Open https://github.com/rolling-scopes-school/js-assignments and test the build icon. Now it will run all tests and update status once you push changes to github. Keep this icon green!
+* Open https://github.com/AlekseyPrusevich/js-assignments and test the build icon. Now it will run all tests and update status once you push changes to github. Keep this icon green!
 
 
 ### How to setup work environment

package.json

@@ -11,8 +11,8 @@
   "devDependencies": {
     "mocha": "^2.3.4"
   },
-  "repository" : {
-    "type" : "git",
-    "url" : "https://github.com/rolling-scopes-school/js-assignments.git"
+  "repository": {
+    "type": "git",
+    "url": "https://github.com/rolling-scopes-school/js-assignments.git"
   }
 }

task/01-strings-tasks.js

@@ -12,7 +12,7 @@
 /**
  * Returns the result of concatenation of two strings.
  *
- * @param {string} value1
+ * @param {string} value1 
  * @param {string} value2
  * @return {string}
  *
@@ -22,7 +22,7 @@
  *   '',  'bb'  => 'bb'
  */
 function concatenateStrings(value1, value2) {
-    throw new Error('Not implemented');
+    return value1 + value2
 }
 
 
@@ -38,7 +38,7 @@ function concatenateStrings(value1, value2) {
  *   ''      => 0
  */
 function getStringLength(value) {
-    throw new Error('Not implemented');
+    return value.length;
 }
 
 /**
@@ -55,7 +55,7 @@ function getStringLength(value) {
  *   'Chuck','Norris'  => 'Hello, Chuck Norris!'
  */
 function getStringFromTemplate(firstName, lastName) {
-    throw new Error('Not implemented');
+    return `Hello, ${firstName} ${lastName}!`;
 }
 
 /**
@@ -69,7 +69,7 @@ function getStringFromTemplate(firstName, lastName) {
  *   'Hello, Chuck Norris!' => 'Chuck Norris'
  */
 function extractNameFromTemplate(value) {
-    throw new Error('Not implemented');
+    return value.replace('Hello, ', '').replace('!', '');
 }
 
 
@@ -84,7 +84,7 @@ function extractNameFromTemplate(value) {
  *   'cat'       => 'c'
  */
 function getFirstChar(value) {
-    throw new Error('Not implemented');
+    return value.charAt(0);
 }
 
 /**
@@ -99,7 +99,7 @@ function getFirstChar(value) {
  *   '\tHello, World! ' => 'Hello, World!'
  */
 function removeLeadingAndTrailingWhitespaces(value) {
-    throw new Error('Not implemented');
+    return value.trim();
 }
 
 /**
@@ -114,7 +114,7 @@ function removeLeadingAndTrailingWhitespaces(value) {
  *   'cat', 3 => 'catcatcat'
  */
 function repeatString(value, count) {
-    throw new Error('Not implemented');
+    return value.repeat(count);
 }
 
 /**
@@ -130,7 +130,7 @@ function repeatString(value, count) {
  *   'ABABAB','BA' => 'ABAB'
  */
 function removeFirstOccurrences(str, value) {
-    throw new Error('Not implemented');
+    return str.replace(value, '');
 }
 
 /**
@@ -145,7 +145,8 @@ function removeFirstOccurrences(str, value) {
  *   '<a>' => 'a'
  */
 function unbracketTag(str) {
-    throw new Error('Not implemented');
+    return str.replace(/[<>]/g, '');
+    // return str.replace(str[0], '').replace(str[str.length-1], '');
 }
 
 
@@ -160,7 +161,7 @@ function unbracketTag(str) {
  *  'abcdefghijklmnopqrstuvwxyz' => 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'
  */
 function convertToUpperCase(str) {
-    throw new Error('Not implemented');
+    return str.toUpperCase(str);
 }
 
 /**
@@ -174,7 +175,7 @@ function convertToUpperCase(str) {
  *   '[email protected]' => ['[email protected]']
  */
 function extractEmails(str) {
-    throw new Error('Not implemented');
+    return str.split(';');
 }
 
 /**
@@ -201,7 +202,9 @@ function extractEmails(str) {
  *
  */
 function getRectangleString(width, height) {
-    throw new Error('Not implemented');
+    return  '┌' + '─'.repeat(width-2) + '┐' + '\n' + 
+           ('│' + ' '.repeat(width-2) + '│\n').repeat(height-2) + 
+            '└' + '─'.repeat(width-2) + '┘' + '\n';
 }
 
 
@@ -221,7 +224,9 @@ function getRectangleString(width, height) {
  *
  */
 function encodeToRot13(str) {
-    throw new Error('Not implemented');
+    return str.replace(/[a-zA-Z]/g, function (char) {
+        return String.fromCharCode((char <= "Z" ? 90 : 122) >= (char = char.charCodeAt(0) + 13) ? char : char - 26);
+    });
 }
 
 /**
@@ -238,7 +243,7 @@ function encodeToRot13(str) {
  *   isString(new String('test')) => true
  */
 function isString(value) {
-    throw new Error('Not implemented');
+    return value ? typeof value.valueOf() == 'string' : false;
 }
 
 
@@ -267,7 +272,9 @@ function isString(value) {
  *   'K♠' => 51
  */
 function getCardId(value) {
-    throw new Error('Not implemented');
+    let cardsArr = ['A', '2', '3', '4', '5', '6', '7', '8', '9', '10', 'J', 'Q', 'K'];
+    let suitsArr = ['♣', '♦', '♥', '♠'];
+    return cardsArr.indexOf(value.slice(0, -1)) + suitsArr.indexOf(value.slice(-1)) * cardsArr.length;
 }