Александр Степанов - РУКОВОДСТВО ПО СТАНДАРТНОЙ БИБЛИОТЕКЕ ШАБЛОНОВ (STL) Страница 24

 cout ‹‹ endl;

 return 0;

}

vec4.cpp

#include ‹iostream.h›

#include ‹stl.h›

int main() {

 vector‹int› v(4);

 v[0] = 1;

 v[1] = 4;

 v[2] = 9;

 v[3] = 16;

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

 cout ‹‹ "back = " ‹‹ v.back() ‹‹ ", size = " ‹‹ v.size() ‹‹ endl;

 v.push_back(25);

 cout ‹‹ "back = " ‹‹ v.back() ‹‹ ", size = " ‹‹ v.size() ‹‹ endl;

 v.pop_back();

 cout ‹‹ "back = " ‹‹ v.back() ‹‹ ", size = " ‹‹ v.size() ‹‹ endl;

 return 0;

}

lwrbnd2.cpp

#include ‹stl.h›

#include ‹iostream.h›

#include ‹string.h›

bool char_str_less(const char* a_, const char* b_) {

 return ::strcmp(a_, b_) ‹ 0 ? 1 : 0;

}

char* str[] = {"a", "a", "b", "b", "q", "w", "z"};

int main() {

 const unsigned strCt = sizeof(str)/sizeof(str[0]);

 cout ‹‹ "d can be inserted at index: "

  ‹‹ (lower_bound(str, str + strCt, "d", char_str_less) - str) ‹‹ endl;

 return 0;

}

pheap2.cpp

#include ‹stl.h›

#include ‹iostream.h›

int main() {

 vector‹int› v;

 v.push_back(1);

 v.push_back(20);

 v.push_back(4);

 make_heap(v.begin(), v.end(), greater‹int›());

 v.push_back(7);

 push_heap(v.begin(), v.end(), greater‹int›());

 sort_heap(v.begin(), v.end(), greater‹int›());

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

 copy(v.begin(), v.end(), iter);

 cout ‹‹ endl;

 return 0;

}

insert2.cpp

#include ‹iostream.h›

#include ‹stl.h›

char* array1[] = {"laurie", "jennifer", "leisa"};

char* array2[] = {"amanda", "saskia", "carrie"};

int main() {

 deque‹char*› names(array1, array1 + 3);

 deque‹char*›::iterator i = names.begin() + 2;

 copy(array2, array2 + 3, inserter(names, i));

 deque‹char*›::iterator j;

 for (j = names.begin(); j!= names.end(); j++) cout ‹‹ *j ‹‹ endl;

 return 0;

}

uprbnd2.cpp

#include ‹stl.h›

#include ‹iostream.h›

#include ‹string.h›

bool char_str_less(const char* a_, const char* b_) {

 return ::strcmp(a_, b_) ‹ 0 ? 1 : 0;

}

char* str[] = {"a", "a", "b", "b", "q", "w", "z"};

int main() {

 const unsigned strCt = sizeof(str)/sizeof(str[0]);

 cout ‹‹ "d can be inserted at index: "

  ‹‹ upper_bound(str, str + strCt, "d", char_str_less) - str ‹‹ endl;

 return 0;

}

vec3.cpp

#include ‹iostream.h›

#include ‹stl.h›

int main() {

 vector‹char› v1; // Empty vector of characters.

 v1.push_back('h');

 v1.push_back('i');

 cout ‹‹ "v1 = " ‹‹ v1[0] ‹‹ v1[1] ‹‹ endl;

 vector‹char› v2(v1);

 v2[1] = 'o'; // Replace second character.

 cout ‹‹ "v2 = " ‹‹ v2[0] ‹‹ v2[1] ‹‹ endl;

 cout ‹‹ "(v1 == v2) = " ‹‹ (v1 == v2) ‹‹ endl;

 cout ‹‹ "(v1 ‹ v2) = " ‹‹ (v1 ‹ v2) ‹‹ endl;

 return 0;

}

iter4.cpp

#include ‹iostream.h›

#include ‹stl.h›

int main() {

 vector‹int› v; // Empty vector of integers.

 v.push_back(1);

 v.push_back(2);

 v.push_back(3);

 // Position immediately after last item.

 vector‹int›::iterator i = v.end();

 // Move back one and then access.

  cout ‹‹ "last element is " ‹‹ *--i ‹‹ endl;

 i -= 2; // Jump back two items.

 cout ‹‹ "first element is " ‹‹ *i ‹‹ endl;

 return 0;

}

setdiff0.cpp

#include ‹stl.h›

#include ‹iostream.h›

int v1[3] = {13, 18, 23};

int v2[4] = {10, 13, 17, 23};

int result[4] = {0, 0, 0, 0};

int main() {

 set_difference(v1, v1 + 3, v2, v2 + 4, result);

 for (int i = 0; i ‹ 4; i++) cout ‹‹ result[i] ‹‹ ' ';

 cout ‹‹ endl;

 set_difference(v2, v2 + 4, v1, v1 + 2, result);

 for (i = 0; i ‹ 4; i++) cout ‹‹ result[i] ‹‹ ' ';

 cout ‹‹ endl;

return 0;

}

lexcmp2.cpp

#include ‹stl.h›

#include ‹iostream.h›

const unsigned size = 6;

char n1[size] = "shoe";

char n2[size] = "shine";

int main() {

 bool before = lexicographical_compare(n1, n1 + size, n2, n2 + size, greater‹char›());

 if (before) cout ‹‹ n1 ‹‹ " is after " ‹‹ n2 ‹‹ endl;

 else cout ‹‹ n2 ‹‹ " is after " ‹‹ n1 ‹‹ endl;

 return 0;

}

adjdiff1.cpp

#include ‹stl.h›

#include ‹iostream.h›

int main() {

 vector‹int› v(10);

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

 vector‹int› result(v.size());

 adjacent_difference(v.begin(), v.end(), result.begin());

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

 copy(v.begin(), v.end(), iter);

 cout ‹‹ endl;

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

 cout ‹‹ endl;

 return 0;

}

stblptn1.cpp

#include ‹stl.h›

#include ‹stdlib.h›

#include ‹iostream.h›

int main() {

 vector‹int› v1(10);

 for (int i = 0; i ‹ v1.size(); i++) v1[i] = rand() % 20;

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

 copy(v1.begin(), v1.end(), iter);

 cout ‹‹ endl;

 stable_partition(v1.begin(), v1.end(), bind2nd(less‹int›(), 11));

 copy(v1.begin(), v1.end(), iter);

 cout ‹‹ endl;

 return 0;

}

ptition1.cpp

#include ‹stl.h›

#include ‹stdlib.h›

#include ‹iostream.h›

int main() {

 vector‹int› v1(10);

 for (int i = 0; i ‹ v1.size(); i++) v1[i] = rand() % 20;

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

 copy(v1.begin(), v1.end(), iter);

 cout ‹‹ endl;

 partition(v1.begin(), v1.end(), bind2nd(less‹int›(), 11));

 copy(v1.begin(), v1.end(), iter);

 cout ‹‹ endl;

 return 0;

}

vec1.cpp

#include ‹iostream.h›

#include ‹stl.h›

int main() {

 vector‹int› v1; // Empty vector of integers.

 cout ‹‹ "empty = " ‹‹ v1.empty() ‹‹ endl;

 cout ‹‹ "size = " ‹‹ v1.size() ‹‹ endl;

 cout ‹‹ "max_size = " ‹‹ v1.max_size() ‹‹ endl;

 v1.push_back(42); // Add an integer to the vector.

 cout ‹‹ "size = " ‹‹ v1.size() ‹‹ endl;

 cout ‹‹ "v1[0] = " ‹‹ v1[0] ‹‹ endl;

 return 0;

}

sort2.cpp

#include ‹stl.h›

#include ‹iostream.h›

int array[] = {1, 50, -10, 11, 42, 19};

int main() {

 int count = sizeof(array) / sizeof(array[0]);

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

 cout ‹‹ "before: ";

 copy(array, array + count, iter);

 cout ‹‹ "\nafter: ";

 sort(array, array + count, greater‹int›());

 copy(array, array + count, iter);

 cout ‹‹ endl;

 return 0;

}

copy4.cpp

#include ‹stl.h›

#include ‹iostream.h›

int main() {

 typedef vector‹int› IVec;

 vector‹int› v1(10);

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

 vector‹int› v2;

 insert_iterator‹IVec› i (v2, v2.begin());

 copy(v1.begin(), v1.end(), i);

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

 copy(v2.begin(), v2.end(), outIter);

 cout ‹‹ endl;

 return 0;

}

prevprm2.cpp

#include ‹stl.h›

#include ‹iostream.h›

int main() {

 vector‹int› v1(3);

 iota(v1.begin(), v1.end(), 0);

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

 copy(v1.begin(), v1.end(), iter);

 cout ‹‹ endl;

 for (int i = 0; i ‹ 9; i++) {

  prev_permutation(v1.begin(), v1.end(), greater‹int›());

  copy(v1.begin(), v1.end(), iter);

  cout ‹‹ endl;

 }

return 0;

}

trnsfrm2.cpp

#include ‹stl.h›

#include ‹iostream.h›

#include ‹string.h›

char map_char(char a_, int b_) {

 return char(a_ + b_);

}

int trans[] = {-4, 4, -6, -6, -10, 0, 10, -6, 6, 0, -1, -77};

char n[] = "Larry Mullen";

int main() {

 const unsigned count  = ::strlen(n);

 ostream_iterator ‹char› iter(cout);

 transform(n, n + count, trans, iter, map_char);

 cout ‹‹ endl;

 return 0;

}

iter1.cpp

#include ‹iostream.h›

#include ‹stl.h›

int main() {

 vector‹const char*› v; // Vector of character strings.

 v.push_back((char*) "zippy"); // First element.

 v.push_back((char*) "motorboy"); // Second element.

 vector‹const char*›::iterator i = v.begin(); // Position at end.

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

 return 0;

}

maxelem2.cpp

#include ‹stl.h›

#include ‹iostream.h›

#include ‹string.h›

bool str_compare(const char* a_, const char* b_) {

 return ::strcmp(a_, b_) ‹ 0 ? 1 : 0;

}

char* names[] = {"Brett", "Graham", "Jack", "Mike", "Todd"};