Task of 25/8/2019

25th Aug, 2019/Function/Task - 1/farhan.rb

@@ -0,0 +1,36 @@
+VALID_EMAIL_REGEX =  /\A[\w+\-.]+@[a-z\d\-]+(\.[a-z\d\-]+)*\.[a-z]+\z/i #regular expression for email validation
+
+def isEmailValid(email)
+      if !(email.size>=10 and email.size<=50)
+        return false
+      elsif !(email =~ VALID_EMAIL_REGEX)
+        return false
+      end
+      return true
+end
+
+def isPasswordValid(password)
+   if password[/^(?=.*[a-zA-Z])(?=.*[0-9])(?=.*[\W]).{8,32}$/]  #regular expression for password validation
+     return true
+   end
+   return false
+end
+
+puts "Enter Email : "
+emailAddress=gets.chomp
+puts "Enter Password : "
+password=gets.chomp
+
+if(isEmailValid(emailAddress))
+  puts "email is valid"
+else
+  puts "email is not valid"
+end
+
+if(isPasswordValid(password))
+  puts "password is valid"
+else
+  puts "password is not valid"
+end
+
+

25th Aug, 2019/OOP Concepts/Task - 1/farhan.rb

@@ -0,0 +1,25 @@
+class Human
+    attr_accessor :Name, :Age, :Gender , :Height , :Weight # creates both getter and setter methods
+    def initialize  #Constructor
+    end
+end
+
+man = Human.new()
+man.Name="farhan"
+man.Age=25
+man.Gender="male"
+man.Height=5.5
+man.Weight=65
+
+human = Human.new()
+human.Name="human"
+human.Age="unknown"
+human.Gender="unknown"
+human.Height="unknown"
+human.Weight="unknown"
+
+puts human.Weight
+
+
+
+

25th Aug, 2019/Variables, Expressions, Loops, Conditons/Task -1/farhan.rb

@@ -0,0 +1,23 @@
+
+def isPalindrome(string)
+    temp=string.dup
+    if(string.downcase==temp.reverse!.downcase)
+        return true
+    else
+        return false
+    end
+end
+
+
+puts "Enter String : "
+inputString=gets.chomp
+temp=inputString.dup
+puts "Length : "+inputString.size.to_s
+puts "Reverse:  : "+temp.reverse!
+puts "isPalindrome:  : "+isPalindrome(inputString).to_s
+puts "lower-case:  : "+inputString.scan(/[a-z]/).length.to_s
+puts "upper-case:  : "+inputString.scan(/[A-Z]/).length.to_s
+puts "numbers:  : "+inputString.scan(/[0-9]/).length.to_s
+puts "special:  : "+inputString.scan(/[^ A-Za-z0-9]/).length.to_s
+puts "upper-case string: "+inputString.downcase
+puts "lower-case string: "+inputString.upcase

26th Aug, 2019/File Operations/Task - 1/farhan.rb

@@ -0,0 +1,80 @@
+INPUT_FILE_NAME="farhan_input.txt"
+COMPRESSED_FILE_NAME="farhan_compressed.txt"
+DECOMPRESSED_FILE_NAME="farhan_decompressed.txt"
+
+def writeDataInFile(data,fileName)
+    aFile = File.new(fileName, "r+")
+    if aFile
+        aFile.syswrite(data)
+    else puts "Unable to open file!"
+    end
+end
+
+def characterCount(subString)
+    oldChar=subString[0]
+    charCount=1
+    counterString=""
+    for i in 1..subString.length-1 do
+        if oldChar.match(subString[i])
+            charCount+=1
+            temp=charCount.dup
+        else
+              counterString+=charCount.to_s+oldChar
+              oldChar=subString[i]
+              charCount=1
+         end
+    end
+    return counterString+=" "
+end
+
+def compressor(string)
+     startPosition=0
+     finalResult=""
+    loop do
+        spacePosition=string.index(' ',startPosition)
+        if spacePosition==nil
+            finalResult+=characterCount(string[startPosition..string.length].to_s+" ")
+            writeDataInFile(finalResult,COMPRESSED_FILE_NAME)
+            break
+        else
+            finalResult+=characterCount(string[startPosition..spacePosition].to_s) 
+            startPosition=spacePosition+1
+        end  
+    end 
+end
+
+# def decompressor(string)
+#     startPosition=0
+#     finalResult=""
+#     loop do
+#         spacePosition=string.index(' ',startPosition)
+#         if spacePosition==nil
+#             finalResult+=characterCount(string[startPosition..string.length].to_s+" ")
+#             writeDataInFile(finalResult,COMPRESSED_FILE_NAME)
+#             break
+#         else
+#             finalResult+=characterCount(string[startPosition..spacePosition].to_s) 
+#             startPosition=spacePosition+1
+#         end  
+#     end 
+# end
+
+
+def readdataFromFile(filename,whichFile)
+    if File.exists?(fileName)
+        if File.open(fileName)
+            temp=""
+           IO.foreach(fileName){|block|temp+=block}
+           if whichFile.to_i==1
+            compressor temp.to_s
+        else
+            decompressor temp.to_s
+        else puts "Unable to open file!"
+        end
+    else
+        puts "File not found"
+    end
+end
+
+
+

26th Aug, 2019/File Operations/Task - 1/farhan_compressed.txt

@@ -0,0 +1 @@
+3a1m1a2r 2a1m3i1I 

26th Aug, 2019/File Operations/Task - 1/farhan_input.txt

@@ -0,0 +1 @@
+aaamarr aamiiiI

26th Aug, 2019/Simple Mail/Task - 1/farhan.rb

@@ -0,0 +1,26 @@
+require 'net/smtp'
+require 'securerandom'
+
+def sendEmail(toEmail)
+    randomNumber=SecureRandom.random_number(99999..1000000) #It will generate 6 digit random number
+    puts "email : "+toEmail
+    msg = randomNumber.to_s
+    smtp = Net::SMTP.new 'smtp.gmail.com', 587
+    smtp.enable_starttls
+    smtp.start("domain", fromEmail, password, :login) do #Here you should put your gmail id and password
+    smtp.send_message(msg, fromEmail, toEmail.to_s)         #You also need to give permission for less secure app in your gmail
+    smtp.finish
+    end
+end
+
+
+if File.exists?("email.txt")
+    begin  
+        arr = IO.readlines("email.txt")
+        sendEmail(arr[0].to_s)
+    rescue 
+        puts "Unable to open file!"
+    end
+else
+    puts "File not found"
+end