static boolean isPower ( int a ) {
  if ( a == 1 ) return true ;
  for ( int i = 2 ;
  i * i <= a ;
  i ++ ) {
    double val = Math . log ( a ) / Math . log ( i ) ;
    if ( ( val - ( int ) val ) < 0.00000001 ) return true ;
  }
  return false ;
}

static boolean isPower ( int a ) { if ( a == 1 ) return true ; for ( int i = 2 ; i * i <= a ; i ++ ) { double val = Math . log ( a ) / Math . log ( i ) ; if ( ( val - ( int ) val ) < 0.00000001 ) return true ; } return false ; }
(method_declaration (modifiers) type: (boolean_type) name: (identifier) parameters: (formal_parameters (formal_parameter type: (integral_type) name: (identifier))) body: (block (if_statement condition: (parenthesized_expression (binary_expression left: (identifier) right: (decimal_integer_literal))) consequence: (return_statement (true))) (for_statement init: (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (decimal_integer_literal))) condition: (binary_expression left: (binary_expression left: (identifier) right: (identifier)) right: (identifier)) update: (update_expression (identifier)) body: (block (local_variable_declaration type: (floating_point_type) declarator: (variable_declarator name: (identifier) value: (binary_expression left: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (identifier))) right: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (identifier)))))) (if_statement condition: (parenthesized_expression (binary_expression left: (parenthesized_expression (binary_expression left: (identifier) right: (cast_expression type: (integral_type) value: (identifier)))) right: (decimal_floating_point_literal))) consequence: (return_statement (true))))) (return_statement (false))))