Completed assignment Day1

Day1/assignment.rb

@@ -2,24 +2,26 @@
 # --------------------------------------------------------------------------
 
 # 1. Write a method to swap two variables. 
-# def method(a, b)
-#   Your code here....
-# end
+def swap(a,b)
+a,b = b,a
+end
 
 
 
 # 2. Write any one use case of === operator.
-# Your answer here...
+Used to test equality within a when clause of a case statement.
+ex: (1...10) === 5 
+=> it returns true.
 
 
 
 # 3. Print array of alphabates using Range operator.
-# Your answer here...
+puts ('a'..'z').to_a
 
 
 
 # 4. Print 'Ho! Ho! Ho! Merry Christmas!' using string interpolation and * operator.
-# Your answer here...
+print "Ho! "*3 + "Merry Christmas!"
 
 
 
@@ -30,3 +32,9 @@
 #       "Your name is <user's name>"
 #       "Your age is <user's age>"
 # Your answer here...
+
+print "Enter Your Name :"
+name = gets
+print "Enter Your age :"
+age = gets
+print "Your Name is : " + name + "Your Age is : " + age

Day2/assignments/arrays_qs.rb

@@ -4,34 +4,67 @@
 # Declare one array arr1 and method with array as parameter
 # return sum of elements in arr1 using each loop
 def sum_of_arr(arr)
-  # do whatever you want...
+   sum = 0
+   arr.each do |i|
+       sum = sum + i
+   end
+   sum
 end
 
+puts sum_of_arr(array)
+=>55
+
+
 # Question2
 # Following method 'push_elements_into_array' accepts two parameters
 # 1. array & 2. new_element which user want to insert into array
 # Method will return array with new element.
 # Add new_element into array using 'push' method of Array
 def push_elements_into_array(arr, ele)
-  # you can do it.. :-)
+    arr.push(ele)
+    arr
 end
 
+puts push_elements_into array(arr,6)
+=>[1, 2, 3, 4, 5, 6]
+
 # Question3
 # Pass array to below method
 # Iterate on array and puts each element from array
 # using 'pop' method of Array
 def pop_from_array(arr)
-  # you can do it.. :-)
+   l=arr.length
+   l.each do
+      num=arr.pop
+      puts "#{num} is removed!"
+   end
 end
 
+pop_from_array(arr)
+
+
+
 # Question4
 # a. Declare one array b. sort the array using 'sort' method
 # c. reverse the array d. puts element having index = 4
 # You can get index directly by using 'each_with_index' method
 # eg. a = [1, 2, 3]
 # a.each_with_index { |n, index| .... }
 # Here, n = element of array & index = index of element in array
+a=[9,2,4,6,8,1,3,7,5,10]
+=> [9, 2, 4, 6, 8, 1, 3, 7, 5, 10]
+a.sort
+=> [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]
+a.reverse
+=> [10, 5, 7, 3, 1, 8, 6, 4, 2, 9]
+puts a[4]
+=> 8
+
+
+
 
 # Question5
 # str = 'Hello Ruby!!!'
 # Write code to store str into array as ['Hello fun', 'Ruby!!! fun']
+arr = str.split(/ /)
+arr.map {|i| i +" fun"

Day2/assignments/file_qs.rb

@@ -4,15 +4,27 @@
 # with the contents -
 # "This is a test.
 #  Lets learn more about Ruby."
+f = File.new("test.txt", "w")
+f.write("This is a test.\nLets learn more about ruby.")
+f.close
 
-
-# Question2
+# Questiont1.txt", "w")
 # Puts each line from file
 # Using method 'readlines' to read the above .txt file into an array
-
+File.readlines("test.txt").each do |line|
+  puts line
+end
+This is a test.
+ Lets learn more about ruby.
+ => ["This is a test. \n", " Lets learn more about ruby.\n"]
 
 # Question3
 # Check if the file new.txt exists.
+File.exists?("test.txt")
+=>true
+
 
 # Question4
-# Rename the test.txt file powers.txt.
+# Rename the test.txt file powers.txt.
+File.rename("test.txt","power.txt")
+=>0

Day2/assignments/string_qs.rb

@@ -1,19 +1,33 @@
 # Question1
 # Get the first letter from the string "Hello, Ruby!!".
+str[0]
+=> "H"
 
 # Question2
 # Get the first through 5th elements from the "Hello, Ruby!!" string.
+str[4]
+=>"0"
 
 # Question3
 # Check the 'sprintf' documentation and the % documentation in the String class
 # and write one line code to print exact following line
 # "1$ = Rs60.48"
+sprintf("1$ = Rs %#.2f",60.48)
+=> "1$ = Rs 60.48"
+
 
 # Question4
 # What is the problem with the following code? Correct it and puts.
 # my variable = 'Mr. White'
+my_variable='Mr. White'
+puts my_variable
+=>Mr. White
+
+
 
 # Question5
 # Print the result - Concatenate the following strings
 first = 'Beautiful '
-second = 'face tattoo'
+second = 'face tattoo'
+puts first+second
+=> Beautiful face Tattoo