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- //: C21:SearchReplace.cpp
- // From Thinking in C++, 2nd Edition
- // Available at http://www.BruceEckel.com
- // (c) Bruce Eckel 1999
- // Copyright notice in Copyright.txt
- // The STL search and replace algorithms
- #include "PrintSequence.h"
- #include <vector>
- #include <algorithm>
- #include <functional>
- using namespace std;
-
- struct PlusOne {
- bool operator()(int i, int j) {
- return j == i + 1;
- }
- };
-
- class MulMoreThan {
- int value;
- public:
- MulMoreThan(int val) : value(val) {}
- bool operator()(int v, int m) {
- return v * m > value;
- }
- };
-
- int main() {
- int a[] = { 1, 2, 3, 4, 5, 6, 6, 7, 7, 7,
- 8, 8, 8, 8, 11, 11, 11, 11, 11 };
- const int asz = sizeof a / sizeof *a;
- vector<int> v(a, a + asz);
- print(v, "v", " ");
- vector<int>::iterator it =
- find(v.begin(), v.end(), 4);
- cout << "find: " << *it << endl;
- it = find_if(v.begin(), v.end(),
- bind2nd(greater<int>(), 8));
- cout << "find_if: " << *it << endl;
- it = adjacent_find(v.begin(), v.end());
- while(it != v.end()) {
- cout << "adjacent_find: " << *it
- << ", " << *(it + 1) << endl;
- it = adjacent_find(it + 2, v.end());
- }
- it = adjacent_find(v.begin(), v.end(),
- PlusOne());
- while(it != v.end()) {
- cout << "adjacent_find PlusOne: " << *it
- << ", " << *(it + 1) << endl;
- it = adjacent_find(it + 1, v.end(),
- PlusOne());
- }
- int b[] = { 8, 11 };
- const int bsz = sizeof b / sizeof *b;
- print(b, b + bsz, "b", " ");
- it = find_first_of(v.begin(), v.end(),
- b, b + bsz);
- print(it, it + bsz, "find_first_of", " ");
- it = find_first_of(v.begin(), v.end(),
- b, b + bsz, PlusOne());
- print(it,it + bsz,"find_first_of PlusOne"," ");
- it = search(v.begin(), v.end(), b, b + bsz);
- print(it, it + bsz, "search", " ");
- int c[] = { 5, 6, 7 };
- const int csz = sizeof c / sizeof *c;
- print(c, c + csz, "c", " ");
- it = search(v.begin(), v.end(),
- c, c + csz, PlusOne());
- print(it, it + csz,"search PlusOne", " ");
- int d[] = { 11, 11, 11 };
- const int dsz = sizeof d / sizeof *d;
- print(d, d + dsz, "d", " ");
- it = find_end(v.begin(), v.end(), d, d + dsz);
- print(it, v.end(),"find_end", " ");
- int e[] = { 9, 9 };
- print(e, e + 2, "e", " ");
- it = find_end(v.begin(), v.end(),
- e, e + 2, PlusOne());
- print(it, v.end(),"find_end PlusOne"," ");
- it = search_n(v.begin(), v.end(), 3, 7);
- print(it, it + 3, "search_n 3, 7", " ");
- it = search_n(v.begin(), v.end(),
- 6, 15, MulMoreThan(100));
- print(it, it + 6,
- "search_n 6, 15, MulMoreThan(100)", " ");
- cout << "min_element: " <<
- *min_element(v.begin(), v.end()) << endl;
- cout << "max_element: " <<
- *max_element(v.begin(), v.end()) << endl;
- vector<int> v2;
- replace_copy(v.begin(), v.end(),
- back_inserter(v2), 8, 47);
- print(v2, "replace_copy 8 -> 47", " ");
- replace_if(v.begin(), v.end(),
- bind2nd(greater_equal<int>(), 7), -1);
- print(v, "replace_if >= 7 -> -1", " ");
- } ///:~
-