Operations with ruby array and create MyArray class.

Author: deepakhb2

.gitignore

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+*.swp

Data-Structurs-Arrays/array.rb

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+strings = ['a','b','c','d']
+# 4*4 = 16 bytes of storage is used
+
+puts(strings[2])
+
+#push  
+strings.append('e')      # O(1)
+#pop  
+strings.pop() 
+strings.pop()            # O(1)
+
+#addfirstelement 
+strings.insert(0,'x')    #O(n)
+
+#splice
+strings.insert(2,'alien')   #O(n)
+
+print(strings)
+puts(strings.length)

Data-Structurs-Arrays/my_array.rb

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+class MyArray
+  def initialize
+    @length = 0
+    @data = {}
+  end
+
+  def length
+    @length
+  end
+
+  def to_s
+    puts @data
+  end
+
+  def push(item)
+    @data[@length] = item
+    @length += 1
+  end
+
+  def pop
+    last_item = @data[@length-1]
+    @data.delete(@length-1)
+    @length -= 1
+    last_item
+  end
+
+  def delete(index)
+    del_item = @data[index]
+    (index...@length).each do |i|
+      @data[i] = @data[i+1]
+    end
+    @data.delete(@length-1)
+    @length -= 1
+    del_item
+  end
+end
+
+array = MyArray.new
+array.push(3)
+array.pop
+array.push('hi')
+array.push(34)
+array.push(20)
+array.push('hey')
+array.push('welcome')
+array.delete(3)
+array.pop
+array.pop
+puts(array)