From 648a14ec62c314d1bc8a4725819d187527d99c8e Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=D0=A7=D1=83=D0=B1=D0=BA=D0=BE=20=D0=9C=D0=B8=D1=85=D0=B0?=
 =?UTF-8?q?=D0=B9=D0=BB=D0=BE?= <misha.chubko@gmail.com>
Date: Tue, 28 Nov 2023 18:26:24 +0200
Subject: [PATCH] =?UTF-8?q?=D0=98=D0=BA-12=5F=D0=A7=D1=83=D0=B1=D0=BA?=
 =?UTF-8?q?=D0=BE?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 Exercises/1-random.js  |  2 ++
 Exercises/2-key.js     |  9 ++++++---
 Exercises/3-ip.js      |  9 ++++-----
 Exercises/4-methods.js | 14 +++++++++++++-
 4 files changed, 25 insertions(+), 9 deletions(-)

diff --git a/Exercises/1-random.js b/Exercises/1-random.js
index ef5ccaf..ff6bfd7 100644
--- a/Exercises/1-random.js
+++ b/Exercises/1-random.js
@@ -4,6 +4,8 @@ const random = (min, max) => {
   // Generate random Number between from min to max
   // Use Math.random() and Math.floor()
   // See documentation at MDN
+  return Math.floor(Math.random() * (max - min + 1)) + min;
 };
 
 module.exports = { random };
+
diff --git a/Exercises/2-key.js b/Exercises/2-key.js
index ba7e53a..aee2b70 100644
--- a/Exercises/2-key.js
+++ b/Exercises/2-key.js
@@ -1,9 +1,12 @@
 'use strict';
 
 const generateKey = (length, possible) => {
-  // Generate string of random characters
-  // Use Math.random() and Math.floor()
-  // See documentation at MDN
+  let key = '';
+  for (let i = 0; i < length; i++) {
+    const randomIndex = Math.floor(Math.random() * possible.length);
+    key += possible[randomIndex];
+  }
+  return key;
 };
 
 module.exports = { generateKey };
diff --git a/Exercises/3-ip.js b/Exercises/3-ip.js
index 1e2c406..0012439 100644
--- a/Exercises/3-ip.js
+++ b/Exercises/3-ip.js
@@ -1,11 +1,10 @@
 'use strict';
 
 const ipToInt = (ip = '127.0.0.1') => {
-  // Parse ip address as string, for example '10.0.0.1'
-  // to ['10', '0', '0', '1'] to [10, 0, 0, 1]
-  // and convert to Number value 167772161 with bitwise shift
-  // (10 << 8 << 8 << 8) + (0 << 8 << 8) + (0 << 8) + 1 === 167772161
-  // Use Array.prototype.reduce of for loop
+  return ip.split('.').reduce((accumulator, currentValue, currentIndex, array) => {
+    return accumulator + (parseInt(currentValue) << ((array.length - currentIndex - 1) * 8));
+  }, 0);
 };
 
 module.exports = { ipToInt };
+
diff --git a/Exercises/4-methods.js b/Exercises/4-methods.js
index c1038e8..54d2668 100644
--- a/Exercises/4-methods.js
+++ b/Exercises/4-methods.js
@@ -1,7 +1,7 @@
 'use strict';
 
 const methods = iface => {
-  // Introspect all properties of iface object and
+   // Introspect all properties of iface object and
   // extract function names and number of arguments
   // For example: {
   //   m1: x => [x],
@@ -16,6 +16,18 @@ const methods = iface => {
   //   ['m2', 2],
   //   ['m3', 3]
   // ]
+  const methodNames = Object.keys(iface);
+  const methodsArray = methodNames.reduce((acc, methodName) => {
+    const prop = iface[methodName];
+    if (typeof prop === 'function') { 
+      acc.push([methodName, prop.length]); 
+    }
+    return acc;
+  }, []);
+
+  return methodsArray;
 };
 
 module.exports = { methods };
+
+