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[/] [scarts/] [trunk/] [toolchain/] [scarts-gcc/] [gcc-4.1.1/] [libstdc++-v3/] [testsuite/] [ext/] [pb_assoc/] [example/] [tree_order_statistics.cc] - Rev 19
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// -*- C++ -*- // Copyright (C) 2005 Free Software Foundation, Inc. // // This file is part of the GNU ISO C++ Library. This library is free // software; you can redistribute it and/or modify it under the // terms of the GNU General Public License as published by the // Free Software Foundation; either version 2, or (at your option) // any later version. // This library is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // You should have received a copy of the GNU General Public License along // with this library; see the file COPYING. If not, write to the Free // Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, // USA. // As a special exception, you may use this file as part of a free software // library without restriction. Specifically, if other files instantiate // templates or use macros or inline functions from this file, or you compile // this file and link it with other files to produce an executable, this // file does not by itself cause the resulting executable to be covered by // the GNU General Public License. This exception does not however // invalidate any other reasons why the executable file might be covered by // the GNU General Public License. // Copyright (C) 2004 Ami Tavory and Vladimir Dreizin, IBM-HRL. // Permission to use, copy, modify, sell, and distribute this software // is hereby granted without fee, provided that the above copyright // notice appears in all copies, and that both that copyright notice and // this permission notice appear in supporting documentation. None of // the above authors, nor IBM Haifa Research Laboratories, make any // representation about the suitability of this software for any // purpose. It is provided "as is" without express or implied warranty. /* * @file tree_order_statistics_example.cpp * An example showing how to use functors for order-statistics * in tree-based containers. */ // For tree_assoc_cntnr #include <ext/pb_assoc/assoc_cntnr.hpp> // For order-statistics related policies #include <ext/pb_assoc/tree_policy.hpp> // For assert #include <cassert> /* * A red-black tree table storing ints and their order statistics. */ typedef pb_assoc::tree_assoc_cntnr< pb_assoc::order_statistics_key<int>, pb_assoc::null_data_type, pb_assoc::order_statistics_key_cmp<std::less<int> >, pb_assoc::rb_tree_ds_tag, pb_assoc::order_statistics_node_updator<int> > set_t; int main() { set_t s; typedef pb_assoc::order_statistics_key< int> int_order_statistics_key; // Insert some entries into s. s.insert(int_order_statistics_key(12)); s.insert(int_order_statistics_key(505)); s.insert(int_order_statistics_key(30)); s.insert(int_order_statistics_key(1000)); s.insert(int_order_statistics_key(10000)); s.insert(int_order_statistics_key(100)); // The order of the keys should be: 12, 30, 100, 505, 1000, 10000. pb_assoc::find_by_order<set_t> by_order; assert(*by_order(s, 0) == 12); assert(*by_order(s, 1) == 30); assert(*by_order(s, 2) == 100); assert(*by_order(s, 3) == 505); assert(*by_order(s, 4) == 1000); assert(*by_order(s, 5) == 10000); assert(by_order(s, 6) == s.end()); // The order of the keys should be: 12, 30, 100, 505, 1000, 10000. pb_assoc::order_by_key<set_t> by_key; assert(by_key(s, 10) == 0); assert(by_key(s, 12) == 0); assert(by_key(s, 15) == 1); assert(by_key(s, 30) == 1); assert(by_key(s, 99) == 2); assert(by_key(s, 100) == 2); assert(by_key(s, 505) == 3); assert(by_key(s, 1000) == 4); assert(by_key(s, 10000) == 5); assert(by_key(s, 9999999) == 6); // Erase an entry. s.erase(int_order_statistics_key(30)); // The order of the keys should be: 12, 100, 505, 1000, 10000. assert(*by_order(s, 0) == 12); assert(*by_order(s, 1) == 100); assert(*by_order(s, 2) == 505); assert(*by_order(s, 3) == 1000); assert(*by_order(s, 4) == 10000); assert(by_order(s, 5) == s.end()); // The order of the keys should be: 12, 100, 505, 1000, 10000. assert(by_key(s, 10) == 0); assert(by_key(s, 12) == 0); assert(by_key(s, 100) == 1); assert(by_key(s, 505) == 2); assert(by_key(s, 707) == 3); assert(by_key(s, 1000) == 3); assert(by_key(s, 1001) == 4); assert(by_key(s, 10000) == 4); assert(by_key(s, 100000) == 5); assert(by_key(s, 9999999) == 5); }