$var1={
     university=>{
          'name'=>'svu',
           'location'=>'ravru',
            'branch'=>{
                     'electronics'=>{
                                'student'=>[
                                         {
                                        'name'=>'xxx',
                                         'number'=>'12',
                                           'semester'=>{
                                                  'Number'=>'1',
                                                  'subjects'=>'7',
                                                   'rank'=>'1'
                                                  }
                                               },
                                       {
                                        'name'=>'xxx',
                                         'number'=>'15',
                                           'semester'=>[
                                                {
                                               'number'=>'1',
                                                'subjects'=>'7',
                                                 'rank'=>'10'
                                                  },
                                                 {
                                                'number'=>'1',
                                                'subjects'=>'7',
                                                 'rank'=>'1'
                                                  }
                                                 ]
                                               },
                                              {
                                        'name'=>'xxx',
                                         'number'=>'16',
                                           'semester'=>[
                                                {
                                               'number'=>'1',
                                                'subjects'=>'7',
                                                 'rank'=>'2'
                                                  },
                                                 {
                                                'number'=>'2',
                                                'subjects'=>'4',
                                                 'rank'=>'2'
                                                  }
                                                 ]
                                               }
                                             }
                                          ]
                                         }
                                       };
               university=>{
                     'name'=>'sku',
                    'location'=>'ANTP',
                      'branch'=>{
                            'electronics'=>{
                                      'student'=>[
                                                {
                                              'name'=>'xxx',
                                               'number'=>'12',
                                         'semester'=>{
                                                      'Number'=>'3',
                                                        'subjects'=>'6',
                                                         'rank'=>'20'
                                     }
                                        },
                                       {
                                        'name'=>'xxx',
                                         'number'=>'6',
                                           'semester'=>[
                                                {
                                               'number'=>'1',
                                                'subjects'=>'9',
                                                 'rank'=>'12'
                                                  },
                                                 {
                                                'number'=>'2',
                                                'subjects'=>'4',
                                                 'rank'=>'2'
                                                  }
                                                 ]
                                               }
                                             }
                                          ]
                                         }
                                       };