Александр Степанов - РУКОВОДСТВО ПО СТАНДАРТНОЙ БИБЛИОТЕКЕ ШАБЛОНОВ (STL) Страница 28

int main() {

 vector‹int› numbers(100);

 for (int i = 0; i ‹ 100; i++) numbers[i] = i % 3;

 int elements = 0;

 count(numbers.begin(), numbers.end(), 2, elements);

 cout ‹‹ "Found " ‹‹ elements ‹‹ " 2's." ‹‹ endl;

 return 0;

}

uniqcpy1.cpp

#include ‹stl.h›

#include ‹iostream.h›

int numbers[8] = {0, 1, 1, 2, 2, 2, 3, 4};

int result[8] = {0, 0, 0, 0, 0, 0, 0, 0};

int main() {

 unique_copy(numbers, numbers + 8, result);

 for (int i = 0; i ‹ 8; i++) cout ‹‹ result[i] ‹‹ ' ';

 cout ‹‹ endl;

 return 0;

}

minus.cpp

#include ‹iostream.h›

#include ‹stl.h›

int input1[4] = {1, 5, 7, 8};

int input2[4] = {1, 4, 8, 3};

int main() {

 int output[4];

 transform(input1, input1 + 4, input2, output, minus‹int›());

 for (int i = 0; i ‹ 4; i++) cout ‹‹ output[i] ‹‹ endl;

 return 0;

}

replcpy1.cpp

#include ‹stl.h›

#include ‹iostream.h›

int numbers[6] = {0, 1, 2, 0, 1, 2};

int result[6] = {0, 0, 0, 0, 0, 0};

int main() {

 replace_copy(numbers, numbers + 6, result, 2, 42);

 for (int i = 0; i ‹ 6; i++) cout ‹‹ result[i] ‹‹ ' ';

 cout ‹‹ endl;

 return 0;

}

swprnge1.cpp

#include ‹stl.h›

#include ‹iostream.h›

#include ‹string.h›

int main() {

 char* word1 = "World";

 char* word2 = "Hello";

 cout ‹‹ word1 ‹‹ " " ‹‹ word2 ‹‹ endl;

 swap_ranges(word1, word1 + ::strlen(word1), word2);

 cout ‹‹ word1 ‹‹ " " ‹‹ word2 ‹‹ endl;

 return 0;

}

vec8.cpp

#include ‹iostream.h›

#include ‹stl.h›

int main() {

 vector‹int› v;

 cout ‹‹ "capacity = " ‹‹ v.capacity() ‹‹ endl;

 v.push_back(42);

 cout ‹‹ "capacity = " ‹‹ v.capacity() ‹‹ endl;

 v.reserve (5000);

 cout ‹‹ "capacity = " ‹‹ v.capacity() ‹‹ endl;

 return 0;

}

plus.cpp

#include ‹iostream.h›

#include ‹stl.h›

int input1[4] = {1, 6, 11, 8};

int input2[4] = {1, 5, 2, 3};

int main() {

 int total = inner_product(input1, input1 + 4, input2, 0, plus‹int›(), times‹int›());

 cout ‹‹ "total = " ‹‹ total ‹‹ endl;

 return 0;

}

remcopy1.cpp

#include ‹stl.h›

#include ‹iostream.h›

int numbers[6] = {1, 2, 3, 1, 2, 3};

int result[6] = {0, 0, 0, 0, 0, 0};

int main() {

 remove_copy(numbers, numbers + 6, result, 2);

 for (int i = 0; i ‹ 6; i++) cout ‹‹ result[i] ‹‹ ' ';

 cout ‹‹ endl;

 return 0;

}

error2.cpp

#include ‹stl.h›

// Compile this code with the symbol OS_USE_EXCEPTIONS defined.

int main() {

 vector‹int› v;

 try {

  v.pop_back(); // Generates an exception.

 } catch (const char* str) {

  cout ‹‹ "Caught exception " ‹‹ str ‹‹ endl;

 }

 return 0;

}

iterswp1.cpp

#include ‹stl.h›

#include ‹iostream.h›

int main() {

 vector‹int› v1(6);

 iota(v1.begin(), v1.end(), 0);

 iter_swap(v1.begin(), v1.begin() + 3);

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

 copy(v1.begin(), v1.end(), iter);

 cout ‹‹ endl;

 return 0;

}

remif1.cpp

#include ‹stl.h›

#include ‹iostream.h›

bool odd(int a_) {

 return a_ % 2;

}

int numbers[6] = {0, 0, 1, 1, 2, 2};

int main() {

 remove_if(numbers, numbers + 6, odd);

 for (int i = 0; i ‹ 6; i++)

 cout ‹‹ numbers[i] ‹‹ ' ';

 cout ‹‹ endl;

 return 0;

}

foreach1.cpp

#include ‹stl.h›

#include ‹iostream.h›

void print_sqr(int a_) {

 cout ‹‹ a_ * a_ ‹‹ " ";

}

int main() {

 vector‹int› v1(10);

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

 for_each(v1.begin(), v1.end(), print_sqr);

 cout ‹‹ endl;

 return 0;

}

parsrtc0.cpp

#include ‹stl.h›

#include ‹iostream.h›

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

int main() {

 int result[3];

 partial_sort_copy(numbers, numbers + 6, result, result + 3);

 for (int i = 0; i ‹ 3; i++) cout ‹‹ result[i] ‹‹ ' ';

 cout ‹‹ endl;

 return 0;

}

pqueue2.cpp

#include ‹iostream.h›

#include ‹stl.h›

int main() {

 priority_queue‹deque‹char*›, greater_s› q;

 q.push((char*) "cat");

 q.push((char*) "dog");

 q.push((char*) "ape");

 while (!q.empty()) {

  cout ‹‹ q.top() ‹‹ endl;

  q.pop();

 }

 return 0;

}

binsrch1.cpp

#include ‹stl.h›

#include ‹iostream.h›

int main() {

 int vector[100];

 for (int i = 0; i ‹ 100; i++) vector[i] = i;

 if (binary_search(vector, vector + 100, 42)) cout ‹‹ "found 42" ‹‹ endl;

 else cout ‹‹ "did not find 42" ‹‹ endl;

 return 0;

}

ptrunf2.cpp

#include ‹iostream.h›

#include ‹stl.h›

bool even(int n_) {

 return (n_ % 2) == 0;

}

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

int main() {

 int* p = find_if(array, array + 3, ptr_fun(even));

 if (p != array + 3) cout ‹‹ *p ‹‹ " is even" ‹‹ endl;

 return 0;

}

rotcopy0.cpp

#include ‹stl.h›

#include ‹iostream.h›

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

int main() {

 int result[6];

 rotate_copy(numbers, numbers + 3, numbers + 6, result);

 for (int i = 0; i ‹ 6; i++) cout ‹‹ result[i] ‹‹ ' ';

 cout ‹‹ endl;

 return 0;

}

mkheap0.cpp

#include ‹stl.h›

#include ‹iostream.h›

int numbers[6] = {5, 10, 4, 13, 11, 19};

int main() {

 make_heap(numbers, numbers + 6);

 for (int i = 6; i ›= 1; i--) {

  cout ‹‹ numbers[0] ‹‹ endl;

  pop_heap(numbers, numbers + i);

 }

 return 0;

}

copy1.cpp

#include ‹stl.h›

#include ‹iostream.h›

#include ‹string.h›

char string[23] = "A string to be copied.";

int main() {

 char result[23];

 copy(string, string + 23, result);

 cout ‹‹ " Src: " ‹‹ string ‹‹ "\nDest: " ‹‹ result ‹‹ endl;

 return 0;

}

find0.cpp

#include ‹stl.h›

#include ‹iostream.h›

int numbers[10] = {0, 1, 4, 9, 16, 25, 36, 49, 64};

int main() {

 int* location;

 location = find(numbers, numbers + 10, 25);

 cout ‹‹ "Found 25 at offset " ‹‹ (location - numbers) ‹‹ endl;

 return 0;

}

partsum0.cpp

#include ‹stl.h›

#include ‹iostream.h›

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

int main() {

 int result[6];

 partial_sum(numbers, numbers + 6, result);

 for (int i = 0; i ‹ 6; i ++) cout ‹‹ result[i] ‹‹ ' ';

 cout ‹‹ endl;

 return 0;

}

bvec1.cpp

#include ‹iostream.h›

#include ‹stl.h›

int main() {

 bit_vector b(3);

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

 cout ‹‹ endl;

 b[0] = b[2] = 1;

 for (i = 0; i ‹ b.size(); i++) cout ‹‹ b[i];

 cout ‹‹ endl;

 return 0;

}

bind2nd1.cpp

#include ‹iostream.h›

#include ‹stl.h›

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

int main() {

 replace_if(array, array + 3, binder2nd‹greater‹int› ›(greater‹int›(), 2), 4);

 for (int i = 0; i ‹ 3; i++) cout ‹‹ array[i] ‹‹ endl;

 return 0;

}

bind1st1.cpp

#include ‹iostream.h›

#include ‹stl.h›

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

int main() {

 int* p = remove_if(array, array + 3, binder1st‹less‹int› ›(less‹int›(), 2));

 for (int* i = array; i != p; i++) cout ‹‹ *i ‹‹ endl;

 return 0;

}

reviter2.cpp

#include ‹iostream.h›

#include ‹stl.h›

int array[] = {1, 5, 2, 3};

int main() {

 vector‹int› v(array, array + 4);

 vector‹int›::reverse_iterator r;

 for (r = v.rbegin(); r != v.rend(); r++) cout ‹‹ *r ‹‹ endl;

 return 0;

}

copy2.cpp

#include ‹stl.h›

#include ‹iostream.h›

int main() {

 vector‹int› v(10);

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

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

 copy(v.begin(), v.end(), iter);