?? setoperations.cpp
字號:
//: C21:SetOperations.cpp
// From Thinking in C++, 2nd Edition
// Available at http://www.BruceEckel.com
// (c) Bruce Eckel 1999
// Copyright notice in Copyright.txt
// Set operations on sorted ranges
#include <vector>
#include <algorithm>
#include "PrintSequence.h"
#include "Generators.h"
using namespace std;
int main() {
vector<char> v(50), v2(50);
CharGen g;
generate(v.begin(), v.end(), g);
generate(v2.begin(), v2.end(), g);
sort(v.begin(), v.end());
sort(v2.begin(), v2.end());
print(v, "v", "");
print(v2, "v2", "");
bool b = includes(v.begin(), v.end(),
v.begin() + v.size()/2, v.end());
cout << "includes: " <<
(b ? "true" : "false") << endl;
vector<char> v3, v4, v5, v6;
set_union(v.begin(), v.end(),
v2.begin(), v2.end(), back_inserter(v3));
print(v3, "set_union", "");
set_intersection(v.begin(), v.end(),
v2.begin(), v2.end(), back_inserter(v4));
print(v4, "set_intersection", "");
set_difference(v.begin(), v.end(),
v2.begin(), v2.end(), back_inserter(v5));
print(v5, "set_difference", "");
set_symmetric_difference(v.begin(), v.end(),
v2.begin(), v2.end(), back_inserter(v6));
print(v6, "set_symmetric_difference","");
} ///:~
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