Assignments

Day1/assignment.rb

@@ -1,25 +1,41 @@
 # Day 1 : Assignments
 # --------------------------------------------------------------------------
 
-# 1. Write a method to swap two variables.
-def method(a, b)
-  my_cde
+<<<<<<< HEAD
+# 1. Write a method to swap two variables. 
+def swap_num(a,b)
+  a = a + b
+  b = a - b
+  a = a - b
+   return a, b
 end
+swap_num(10,20)
 
+
+=======
+# 1. Write a method to swap two variables.
+def swap_it(a, b)
+  return b, a
+end
+swap_it(10,20)
+>>>>>>> upstream/master
 
 
 # 2. Write any one use case of === operator.
-# Your answer here...
-
+def equals?(a, b)
+a === b
+end
+equals?(1, "one")
 
 
 # 3. Print array of alphabates using Range operator.
-# Your answer here...
-
+('a'..'h').to_a
+=> ["a","b","c","d","e","f","g","h"]
 
 
 # 4. Print 'Ho! Ho! Ho! Merry Christmas!' using string interpolation and * operator.
-# Your answer here...
+"#{'Ho! '*3}Merry Christmas!"
+=>Ho! Ho! Ho! Merry Christmas!
 
 
 
@@ -29,4 +45,13 @@ def method(a, b)
 #    c. Finally, print result in the form
 #       "Your name is <user's name>"
 #       "Your age is <user's age>"
-# Your answer here...
+def demo_func()
+  puts "Enter Your Name"
+  name = gets.chomp
+  puts "Enter Your Age"
+  age = gets.chomp
+  puts "hey #{name} of age #{age}"
+end
+demo_func()
+=> Hey Rakesh of age 28
+

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/control_statements.rb

@@ -4,7 +4,27 @@
 # Return true if any of the elements in the random_keys array
 # start with the letter "a" and false otherwise.
 random_keys = ["all", "alone", "children"]
+def find_chr(random_keys,char)
+random_keys.each do |e|
+  if e.include?(char)
+     puts "True"
+  else
+     puts "False"
+  end
+end
+
+find_chr(random_keys,'a')
+
 
 # Question2
 # Return true if the string "stimpy" contains
-# the letter "s" and false otherwise.
+# the letter "s" and false otherwise.
+def check_str(str,s)
+   if str.include?s
+      puts "true"
+   else
+      puts "false"
+   end
+end
+
+check_str(str,'s')

Day2/assignments/extras.rb

@@ -38,7 +38,9 @@ def foo
 puts foo
 
 # Write your difference here:
+Code 1: Here the the loop goes for 10 times and prints prints each num from 0 to 9. foo function returns value 10 as loop goes for 10 times.
 
+Code 2: here it would same as above but the change here is as we print the return value of function foo 10 gets printed at last and puts returns nil value.
 
 
 # Assignment 3

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