title: Sorting arrays in Groovy
body: <p>I'm trying to compare two arrays in groovy. My attempts so far have yielded a mixed response and therefore I'm turning to the collective for advice.</p>
  
  <p>In the following code I'm taking 2 REST responses, parsing them and placing everything under the Invoice node into an array. I then further qualify my array so I have a list of InvoiceIDs and then try to compare the results of the two responses to ensure they are the same. </p>
  
  <p>When I compare the array of InvoiceIDs (Guids) they match - this is not what I expect as the invoice order is currently different between my my 2 response sources.</p>
  
  <p>When I sort the arrays of Invoices IDs the results differ. </p>
  
  <p>I'm suspecting my code is faulty, but have spent an hour rattling through it, to no avail.</p>
  
  <p>Any advice on sorting arrays in groovy or on the code below would be most appreciated:</p>
  
  <pre><code>gu = new com.eviware.soapui.support.GroovyUtils( context )
  def xmlSlurper = new groovy.util.XmlSlurper()
  
  // Setting up the response parameters
  def responseSTAGE = xmlSlurper.parseText(context.expand('${GET Invoices - STAGE#Response}'));
  def responseSTAGE2 = xmlSlurper.parseText(context.expand('${GET Invoices - STAGE2#Response}'));
  responseInvoicesSTAGE = responseSTAGE.Invoices
  responseInvoicesSTAGE2 = responseSTAGE2.Invoices
  
  def arrayOfInvoicesSTAGE = []
  def arrayOfInvoicesSTAGE2 = []
  
  def counter = 0
  
  for (invoice in responseInvoicesSTAGE.Invoice) {
      arrayOfInvoicesSTAGE[counter] = responseInvoicesSTAGE.Invoice[counter].InvoiceID
      //log.info counter+" STAGE"+arrayOfInvoicesSTAGE[counter]
      arrayOfInvoicesSTAGE2[counter] = responseInvoicesSTAGE2.Invoice[counter].InvoiceID
      //log.info counter+" STAGE2"+arrayOfInvoicesSTAGE2[counter]
      counter++
  }
  
  log.info arrayOfInvoicesSTAGE
  log.info arrayOfInvoicesSTAGE2
  
  
  def sortedSTAGE = arrayOfInvoicesSTAGE.sort()
  def sortedSTAGE2 = arrayOfInvoicesSTAGE2.sort()
  log.info sortedSTAGE
  </code></pre>