static void decBinary ( int arr [ ] , int n ) {
  int k = ( int ) ( Math . log ( n ) / Math . log ( 2 ) ) ;
  while ( n > 0 ) {
    arr [ k -- ] = n % 2 ;
    n /= 2 ;
  }
}

static void decBinary ( int arr [ ] , int n ) { int k = ( int ) ( Math . log ( n ) / Math . log ( 2 ) ) ; while ( n > 0 ) { arr [ k -- ] = n % 2 ; n /= 2 ; } }
(method_declaration (modifiers) type: (void_type) name: (identifier) parameters: (formal_parameters (formal_parameter type: (integral_type) name: (identifier) dimensions: (dimensions)) (formal_parameter type: (integral_type) name: (identifier))) body: (block (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (cast_expression type: (integral_type) value: (parenthesized_expression (binary_expression left: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (identifier))) right: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (decimal_integer_literal)))))))) (while_statement condition: (parenthesized_expression (binary_expression left: (identifier) right: (decimal_integer_literal))) body: (block (expression_statement (assignment_expression left: (array_access array: (identifier) index: (update_expression (identifier))) right: (binary_expression left: (identifier) right: (decimal_integer_literal)))) (expression_statement (assignment_expression left: (identifier) right: (decimal_integer_literal)))))))