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extern/stdcxx/4.2.1/examples/manual/equal_range.cpp

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+/**************************************************************************
+ *
+ * eqlrange.cpp - Example program for finding the valid range for insertion 
+ *                of a value in a container.
+ *
+ * $Id: equal_range.cpp 550991 2007-06-26 23:58:07Z sebor $
+ *
+ ***************************************************************************
+ *
+ * Licensed to the Apache Software  Foundation (ASF) under one or more
+ * contributor  license agreements.  See  the NOTICE  file distributed
+ * with  this  work  for  additional information  regarding  copyright
+ * ownership.   The ASF  licenses this  file to  you under  the Apache
+ * License, Version  2.0 (the  "License"); you may  not use  this file
+ * except in  compliance with the License.   You may obtain  a copy of
+ * the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the  License is distributed on an  "AS IS" BASIS,
+ * WITHOUT  WARRANTIES OR CONDITIONS  OF ANY  KIND, either  express or
+ * implied.   See  the License  for  the  specific language  governing
+ * permissions and limitations under the License.
+ *
+ * Copyright 1994-2006 Rogue Wave Software.
+ * 
+ **************************************************************************/
+
+#include <algorithm>
+#include <functional>
+#include <iostream>
+#include <vector>
+
+#include <examples.h>
+
+
+int main ()
+{
+    // Typedef for convenience.
+    typedef std::vector<int, std::allocator<int> > Vector;
+
+    Vector::value_type arr[] = { 0, 1, 2, 2, 3, 4, 2, 2, 2, 6, 7 };
+
+    // Set up a vector.
+    Vector v1 (arr, arr + sizeof arr / sizeof *arr);
+
+    // Try equal_range variants.
+    std::pair<Vector::iterator, Vector::iterator> p1 =
+        std::equal_range (v1.begin (), v1.end (), 3);
+
+    std::pair<Vector::iterator, Vector::iterator> p2 =
+        std::equal_range (v1.begin (), v1.end (), 2,
+                     std::less<Vector::value_type> ()); 
+
+    // Output results.
+    std::cout << "\nThe equal range for 3 is: "
+              << "(" << *p1.first << " , " 
+              << *p1.second << ")" << std::endl;
+
+    std::cout << "\nThe equal range for 2 is: "
+              << "(" << *p2.first << " , " 
+              << *p2.second << ")" << std::endl; 
+
+    return 0;
+}