[
                                 {
                                   'vtype_ug' => 1                                
                                   'total_rate' => 400,
                                 },
                                 {
                                   'total_rate' => 220,
                                 },  
                                 {
                                   'total_rate' => 700,
                                   'vtype_ug' => 1,
                                 }, 
                                 {
                                   'total_rate' => 300,
                                 }, 
                                 {
                                   'total_rate' => 400,
                                 }, 
                                                                  {
                                   'total_rate' => 250,
                                 }, 
                  ]

##</code><code>##

         [
                                 {
                                   'vtype_ug' => 1                                
                                   'total_rate' => 400,
                                 },    
                                 {
                                   'total_rate' => 700,
                                   'vtype_ug' => 1,
                                 },
                                 {
                                   'total_rate' => 220,
                                 },  
                                     
                                 {
                                   'total_rate' => 250,
                                 }, 
                                 {
                                   'total_rate' => 300,
                                 }, 
                                 {
                                   'total_rate' => 400,
                                 }, 
   
                  ]  

##</code><code>##


my @sorted = 
		sort { (exists $a->{vtype_ug}) ? -1 : 0} 
		sort { $a->{total_rate} <=> $b->{total_rate} }