static int sortByFreq ( Integer [ ] arr , int n ) {
  int maxE = - 1 ;
  for ( int i = 0 ;
  i < n ;
  i ++ ) {
    maxE = Math . max ( maxE , arr [ i ] ) ;
  }
  int freq [ ] = new int [ maxE + 1 ] ;
  for ( int i = 0 ;
  i < n ;
  i ++ ) {
    freq [ arr [ i ] ] ++ ;
  }
  int cnt = 0 ;
  for ( int i = 0 ;
  i <= maxE ;
  i ++ ) {
    if ( freq [ i ] > 0 ) {
      int value = 100000 - i ;
      arr [ cnt ] = 100000 * freq [ i ] + value ;
      cnt ++ ;
    }
  }
  return cnt ;
}

static int sortByFreq ( Integer [ ] arr , int n ) { int maxE = - 1 ; for ( int i = 0 ; i < n ; i ++ ) { maxE = Math . max ( maxE , arr [ i ] ) ; } int freq [ ] = new int [ maxE + 1 ] ; for ( int i = 0 ; i < n ; i ++ ) { freq [ arr [ i ] ] ++ ; } int cnt = 0 ; for ( int i = 0 ; i <= maxE ; i ++ ) { if ( freq [ i ] > 0 ) { int value = 100000 - i ; arr [ cnt ] = 100000 * freq [ i ] + value ; cnt ++ ; } } return cnt ; }
(method_declaration (modifiers) type: (integral_type) name: (identifier) parameters: (formal_parameters (formal_parameter type: (array_type element: (type_identifier) dimensions: (dimensions)) name: (identifier)) (formal_parameter type: (integral_type) name: (identifier))) body: (block (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (unary_expression operand: (decimal_integer_literal)))) (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 (expression_statement (assignment_expression left: (identifier) right: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (identifier) (array_access array: (identifier) index: (identifier)))))))) (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) dimensions: (dimensions) value: (array_creation_expression type: (integral_type) dimensions: (dimensions_expr (binary_expression left: (identifier) right: (decimal_integer_literal)))))) (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 (expression_statement (update_expression (array_access array: (identifier) index: (array_access array: (identifier) index: (identifier))))))) (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (decimal_integer_literal))) (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: (decimal_integer_literal))) consequence: (block (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (binary_expression left: (decimal_integer_literal) right: (identifier)))) (expression_statement (assignment_expression left: (array_access array: (identifier) index: (identifier)) right: (binary_expression left: (binary_expression left: (decimal_integer_literal) right: (array_access array: (identifier) index: (identifier))) right: (identifier)))) (expression_statement (update_expression (identifier))))))) (return_statement (identifier))))