refactor: using Parallel Change, introduced a new message that returns roots in order.

Author: hemalvarambhia

src/Math-Polynomials/PMPolynomial.class.st

@@ -193,6 +193,14 @@ PMPolynomial >> negated [
 	^ self * -1
 ]
 
+{ #category : #information }
+PMPolynomial >> orderedRoots [
+	"comment stating purpose of instance-side method"
+	"scope: class-variables  &  instance-variables"
+
+	^ self roots asSortedCollection asArray
+]
+
 { #category : #printing }
 PMPolynomial >> printOn: aStream [
 	"Append to aStream a written representation of the receiver."

src/Math-Tests-Polynomials/PMPolynomialTest.class.st

@@ -235,7 +235,7 @@ PMPolynomialTest >> testPolynomialRoots [
 
 	| polynomial roots |
 	polynomial := PMPolynomial coefficients: #( -10 -13 -2 1 ).
-	roots := polynomial roots asSortedCollection asArray.
+	roots := polynomial orderedRoots .
 	self assert: roots size equals: 3.
 	self assert: (roots at: 1) + 2 closeTo: 0.
 	self assert: (roots at: 2) + 1 closeTo: 0.