Alignment, redundant self, space around operators

[no important files changed]

exercises/practice/complex-numbers/.meta/example.rb

@@ -1,4 +1,5 @@
 class ComplexNumber
+
   attr_reader :real, :imaginary
 
   def initialize(real, imaginary = 0)
@@ -7,39 +8,39 @@ def initialize(real, imaginary = 0)
   end
 
   def ==(other)
-     (self - other).abs < 1e-15
+    (self - other).abs < 1e-15
   end
 
   def +(other)
-    self.class.new(@real + other.real, @imaginary + other.imaginary)
+    self.class.new(real + other.real, imaginary + other.imaginary)
   end
 
   def -(other)
-    self.class.new(@real - other.real, @imaginary - other.imaginary)
+    self.class.new(real - other.real, imaginary - other.imaginary)
   end
 
   def *(other)
-    self.class.new(@real * other.real - @imaginary * other.imaginary,
-         @real * other.imaginary + @imaginary * other.real)
+    self.class.new(real * other.real - imaginary * other.imaginary,
+                   real * other.imaginary + imaginary * other.real)
   end
 
   def /(other)
-    self*other.inv
+    self * other.inv
   end
 
   def abs
-    Math.sqrt((self*self.conjugate).real)
+    Math.sqrt((self * conjugate).real)
   end
 
   def conjugate
-    self.class.new(@real, -@imaginary)
+    self.class.new(real, -imaginary)
   end
 
   def inv
-   self.class.new(@real / abs**2, -@imaginary / abs**2)
+    self.class.new(real / abs**2, -imaginary / abs**2)
   end
 
   def exp
-   self.class.new(Math.exp(@real)) * self.class.new(Math.cos(@imaginary), Math.sin(@imaginary))
+    self.class.new(Math.exp(real)) * self.class.new(Math.cos(imaginary), Math.sin(imaginary))
   end
 end