Александр Степанов - РУКОВОДСТВО ПО СТАНДАРТНОЙ БИБЛИОТЕКЕ ШАБЛОНОВ (STL) Страница 21

int main() {

 pair ‹int*, int*› result;

 result = mismatch(n1, n1 + 5, n2);

 if (result.first == (n1 + 5) && result.second == (n2 + 5))

  cout ‹‹ "n1 and n2 are the same" ‹‹ endl;

 else cout ‹‹ "Mismatch at offset: " ‹‹ (result.first - n1) ‹‹ endl;

 result = mismatch(n1, n1 + 5, n3);

 if (result.first == (n1 + 5) && result.second == (n3 + 5))

  cout ‹‹ "n1 and n3 are the same" ‹‹ endl;

 else cout ‹‹ "Mismatch at offset: " ‹‹ (result.first - n1) ‹‹ endl;

 return 0;

}

rndshuf2.cpp

#include ‹stl.h›

#include ‹stdlib.h›

#include ‹iostream.h›

class MyRandomGenerator {

public:

 nsigned long operator()(unsigned long n_);

};

unsigned long MyRandomGenerator::operator()(unsigned long n_) {

 return rand() % n_;

}

int main() {

 vector‹int› v1(10);

 iota(v1.begin(), v1.end(), 0);

 ostream_iterator ‹int› iter(cout, " ");

 copy(v1.begin(), v1.end(), iter);

 cout ‹‹ endl;

 MyRandomGenerator r;

 for (int i = 0; i ‹ 3; i++) {

  random_shuffle(v1.begin(), v1.end(), r);

  copy(v1.begin(), v1.end(), iter);

  cout ‹‹ endl;

 }

 return 0;

}

merge2.cpp

#include ‹stl.h›

#include ‹iostream.h›

int main() {

 vector‹int› v1(5);

 vector‹int› v2(v1.size());

 for (int i = 0; i ‹ v1.size(); i++) {

  v1[i] = 10 - i;

  v2[i] = 7 - i;

 }

 vector‹int› result(v1.size() + v2.size());

 merge(v1.begin(), v1.end(), v2.begin(), v2.end(), result.begin(), greater‹int›());

 ostream_iterator ‹int› iter(cout, " ");

 copy(v1.begin(), v1.end(), iter);

 cout ‹‹ endl;

 copy(v2.begin(), v2.end(), iter);

 cout ‹‹ endl;

 copy(result.begin(), result.end(), iter);

 cout ‹‹ endl;

 return 0;

}

adjfind1.cpp

#include ‹stl.h›

#include ‹iostream.h›

int main() {

 typedef vector‹int› IntVector;

 IntVector v(10);

 for (int i = 0; i ‹ v.size(); i++) v[i] = i;

 IntVector::iterator location;

 location = adjacent_find(v.begin(), v.end());

 if (location != v.end()) cout ‹‹ "Found adjacent pair of: " ‹‹ *location ‹‹ endl;

 else cout ‹‹ "No adjacent pairs" ‹‹ endl;

 v[6] = 7;

 location = adjacent_find(v.begin(), v.end());

 if (location!= v.end())  cout ‹‹ "Found adjacent pair of: " ‹‹ *location ‹‹ endl;

 else cout ‹‹ "No adjacent pairs" ‹‹ endl;

 return 0;

}

vec7.cpp

#include ‹iostream.h›

#include ‹stl.h›

int array1[] = {1, 4, 25};

int array2[] = {9, 16};

int main() {

 vector‹int› v(array1, array1 + 3);

 v.insert(v.begin(), 0); // Insert before first element.

 v.insert(v.end(), 36); // Insert after last element.

 for (int i = 0; i ‹ v.size(); i++) cout ‹‹ "v[" ‹‹ i ‹‹ "] = " ‹‹ v[i] ‹‹ endl;

 cout ‹‹ endl;

 // Insert contents of array2 before fourth element.

 v.insert(v.begin() + 3, array2, array2 + 2);

 for (i = 0; i ‹ v.size(); i++)

 cout ‹‹ "v[" ‹‹ i ‹‹ "] = " ‹‹ v[i] ‹‹ endl;

 cout ‹‹ endl;

 return 0;

}

bcompos1.cpp

#include ‹iostream.h›

#include ‹stl.h›

struct odd: public unary_function‹int, bool› {

 odd() {}

 bool operator() (int n_) const {return (n_ % 2) - 1;}

};

struct positive: public unary_function‹int, bool› {

 positive() {}

 bool operator() (int n_) const {return n_ ›= 0;}

};

int array[6] = {-2, -1, 0, 1, 2, 3};

int main() {

 binary_compose‹logical_and‹bool›, odd, positive› b(logical_and‹bool›(), odd(), positive());

 int* p = find_if(array, array + 6, b);

 if (p != array + 6) cout ‹‹ *p ‹‹ " is odd and positive" ‹‹ endl;

 return 0;

}

setsymd2.cpp

#include ‹stl.h›

#include ‹iostream.h›

#include ‹string.h›

char* word1 = "ABCDEFGHIJKLMNO";

char* word2 = "LMNOPQRSTUVWXYZ";

int main() {

 ostream_iterator‹char› iter(cout, " ");

 cout ‹‹ "word1: ";

 copy(word1, word1 + ::strlen(word1), iter);

 cout ‹‹ "\nword2: ";

 copy(word2, word2 + ::strlen(word2), iter);

 cout ‹‹ endl;

 set_symmetric_difference(word1, word1 + ::strlen(word1), word2, word2 + ::strlen(word2), iter, less‹char›());

 cout ‹‹ endl;

 return 0;

}

search0.cpp

#include ‹stl.h›

#include ‹iostream.h›

int v1[6] = {1, 1, 2, 3, 5, 8};

int v2[6] = {0, 1, 2, 3, 4, 5};

int v3[2] = {3, 4};

int main() {

 int* location;

 location = search(v1, v1 + 6, v3, v3 + 2);

 if (location == v1 + 6) cout ‹‹ "v3 not contained in v1" ‹‹ endl;

 else cout ‹‹ "Found v3 in v1 at offset: " ‹‹ location - v1 ‹‹ endl;

 location = search(v2, v2 + 6, v3, v3 + 2);

 if (location == v2 + 6) cout ‹‹ "v3 not contained in v2" ‹‹ endl;

 else cout ‹‹ "Found v3 in v2 at offset: " ‹‹ location - v2 ‹‹ endl;

 return 0;

}

eqlrnge1.cpp

#include ‹stl.h›

#include ‹iostream.h›

int main() {

 typedef vector‹int› IntVec;

 IntVec v(10);

 for (int i = 0; i ‹ v.size(); i++) v[i] = i / 3;  ostream_iterator‹int› iter(cout, " ");

 cout ‹‹ "Within the collection:\n\t";

 copy(v.begin(), v.end(), iter);

 pair‹IntVec::iterator, IntVec::iterator› range;

 range = equal_range(v.begin(), v.end(), 2);

 cout ‹‹ "\n2 can be inserted from before index " ‹‹ (range.first - v.begin())

      ‹‹ " to before index " ‹‹ (range.second - v.begin()) ‹‹ endl;

 return 0;

}

rotcopy1.cpp

#include ‹stl.h›

#include ‹iostream.h›

int main() {

vector‹int› v1(10);

iota(v1.begin(), v1.end(), 0);

ostream_iterator ‹int› iter(cout, " ");

copy(v1.begin(), v1.end(), iter);

cout ‹‹ endl;

vector‹int› v2(v1.size());

for (int i = 0; i ‹ v1.size(); i++) {

 rotate_copy(v1.begin(), v1.begin() + i, v1.end(), v2.begin());

 ostream_iterator‹int› iter(cout, " ");

 copy(v2.begin(), v2.end(), iter);

 cout ‹‹ endl;

}

cout ‹‹ endl;

return 0;

}

eqlrnge2.cpp

#include ‹stl.h›

#include ‹iostream.h›

#include ‹string.h›

char chars[] = "aabbccddggghhklllmqqqqssyyzz";

int main() {

 const unsigned count = sizeof(chars) - 1;

 ostream_iterator‹char› iter(cout);

 cout ‹‹ "Within the collection:\n\t";

 copy(chars, chars + count, iter);

 pair‹char*, char*› range;

 range = equal_range(chars, chars + count, 'q', less‹char›());

 cout ‹‹ "\nq can be inserted from before index " ‹‹ (range.first - chars) ‹‹ " to before index "

      ‹‹ (range.second - chars) ‹‹ endl;

 return 0;

}

release1.cpp

#include ‹stl.h›

#include ‹iostream.h›

class X {

public:

 X(int i_): i(i_) {}

 ~X() {cout ‹‹ "Delete X(" ‹‹ i ‹‹ ")" ‹‹ endl;}

 int i;

};

ostream& operator ‹‹ (ostream& stream_, const X& x_) {

 return stream_ ‹‹ "X(" ‹‹ x_.i ‹‹ ")";

}

int main() {

 vector‹X*› v;

 v.push_back(new X(2));

 v.push_back(new X(1));

 v.push_back(new X(4));

 vector‹X*›::iterator i;

 for (i = v.begin(); i!= v.end(); i++) cout ‹‹ *(*i) ‹‹ endl;

 release(v.begin(), v.end()); // Delete heap-based objects.

 return 0;

}

incl1.cpp

#include ‹stl.h›

#include ‹iostream.h›

int main() {

 vector‹int› v1(10);

 vector‹int› v2(3);

 for (int i = 0; i ‹ v1.size(); i++) {

  v1[i] = i;

 }

 if (includes(v1.begin(), v1.end(), v2.begin(), v2.end())) cout ‹‹ "v1 includes v2" ‹‹ endl;

 else cout ‹‹ "v1 does not include v2" ‹‹ endl;

 for (i = 0; i ‹ v2.size(); i++) v2[i] = i + 3;

 if (includes(v1.begin(), v1.end(), v2.begin(), v2.end())) cout ‹‹ "v1 includes v2" ‹‹ endl;

 else cout ‹‹ "v1 does not include v2" ‹‹ endl;

 return 0;

}

setintr2.cpp

#include ‹stl.h›

#include ‹iostream.h›

#include ‹string.h›

char* word1 = "ABCDEFGHIJKLMNO";

char* word2 = "LMNOPQRSTUVWXYZ";

int main() {

 ostream_iterator ‹char› iter(cout, " ");

 cout ‹‹ "word1: ";

 copy(word1, word1 + ::strlen(word1), iter);

 cout ‹‹ "\nword2: ";

 copy(word2, word2 + ::strlen(word2), iter);

 cout ‹‹ endl;

 set_intersection(word1, word1 + ::strlen(word1), word2, word2 + ::strlen(word2), iter, less‹char›());

 cout ‹‹ endl;

 return 0;

}

inrprod1.cpp

#include ‹stl.h›

#include ‹iostream.h›

#include ‹string.h›

int main() {

 vector‹int› v1(3);

 vector‹int› v2(v1.size());

 for (int i = 0; i ‹ v1.size(); i++) {

  v1[i] = i + 1;

  v2[i] = v1.size() - i;

 }

 ostream_iterator‹int› iter(cout, " ");

 cout ‹‹ "Inner product(sum of products) of:\n\t";

 copy(v1.begin(), v1.end(), iter);

 cout ‹‹ "\n\t";

 copy(v2.begin(), v2.end(), iter);

 int result = inner_product(v1.begin(), v1.end(), v2.begin(), 0);