public static void main ( String args [ ] ) {
  int t = sc . nextInt ( ) ;
  for ( int j = 0 ;
  j < t ;
  j ++ ) {
    int n = sc . nextInt ( ) ;
    int arr [ ] = new int [ n ] ;
    for ( int i = 0 ;
    i < n ;
    i ++ ) arr [ i ] = sc . nextInt ( ) ;
    Arrays . sort ( arr ) ;
    boolean flag = true ;
    for ( int i = 1 ;
    i < n ;
    i ++ ) {
      if ( arr [ i ] > arr [ i - 1 ] + 1 ) {
        System . out . println ( "NO" ) ;
        flag = false ;
        break ;
      }
    }
    if ( flag == true ) System . out . println ( "YES" ) ;
  }
}

public static void main ( String args [ ] ) { int t = sc . nextInt ( ) ; for ( int j = 0 ; j < t ; j ++ ) { int n = sc . nextInt ( ) ; int arr [ ] = new int [ n ] ; for ( int i = 0 ; i < n ; i ++ ) arr [ i ] = sc . nextInt ( ) ; Arrays . sort ( arr ) ; boolean flag = true ; for ( int i = 1 ; i < n ; i ++ ) { if ( arr [ i ] > arr [ i - 1 ] + 1 ) { System . out . println ( " NO " ) ; flag = false ; break ; } } if ( flag == true ) System . out . println ( " YES " ) ; } }
(method_declaration (modifiers) type: (void_type) name: (identifier) parameters: (formal_parameters (formal_parameter type: (type_identifier) name: (identifier) dimensions: (dimensions))) body: (block (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list)))) (for_statement init: (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (decimal_integer_literal))) condition: (binary_expression left: (identifier) right: (identifier)) update: (update_expression (identifier)) body: (block (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list)))) (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) dimensions: (dimensions) value: (array_creation_expression type: (integral_type) dimensions: (dimensions_expr (identifier))))) (for_statement init: (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (decimal_integer_literal))) condition: (binary_expression left: (identifier) right: (identifier)) update: (update_expression (identifier)) body: (expression_statement (assignment_expression left: (array_access array: (identifier) index: (identifier)) right: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list))))) (expression_statement (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (identifier)))) (local_variable_declaration type: (boolean_type) declarator: (variable_declarator name: (identifier) value: (true))) (for_statement init: (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (decimal_integer_literal))) condition: (binary_expression left: (identifier) right: (identifier)) update: (update_expression (identifier)) body: (block (if_statement condition: (parenthesized_expression (binary_expression left: (array_access array: (identifier) index: (identifier)) right: (binary_expression left: (array_access array: (identifier) index: (binary_expression left: (identifier) right: (decimal_integer_literal))) right: (decimal_integer_literal)))) consequence: (block (expression_statement (method_invocation object: (field_access object: (identifier) field: (identifier)) name: (identifier) arguments: (argument_list (string_literal)))) (expression_statement (assignment_expression left: (identifier) right: (false))) (break_statement))))) (if_statement condition: (parenthesized_expression (binary_expression left: (identifier) right: (true))) consequence: (expression_statement (method_invocation object: (field_access object: (identifier) field: (identifier)) name: (identifier) arguments: (argument_list (string_literal)))))))))