标签:nal 分配 shuf algo stream for eve shuffle res
sort:对容器元素进行排序
random_shuffle:洗牌,指定范围内的元素随机调整次序
merge:容器元素合并,并存储到另一容器中
reverse:反转指定范围内的元素
1.sort
#include<iostream> using namespace std; #include <algorithm> #include <vector> #include <functional> //常用排序算法 sort void myPrint(int val) { cout << val << " "; } void test01() { vector<int>v; v.push_back(10); v.push_back(30); v.push_back(50); v.push_back(20); v.push_back(40); //利用sort进行升序 sort(v.begin(), v.end()); for_each(v.begin(), v.end(), myPrint); cout << endl; //改变为 降序 sort(v.begin(), v.end(), greater<int>()); for_each(v.begin(), v.end(), myPrint); cout << endl; } int main() { test01(); system("pause"); return 0; }
2.random_shuffle
#include<iostream> using namespace std; #include <vector> #include <algorithm> #include <ctime> //常用排序算法 random_shuffle void myPrint(int val) { cout << val << " "; } void test01() { srand((unsigned int)time(NULL)); vector<int>v; for (int i = 0; i < 10; i++) { v.push_back(i); } //利用洗牌 算法 打乱顺序 random_shuffle(v.begin(), v.end()); for_each(v.begin(), v.end(), myPrint); cout << endl; } int main() { test01(); system("pause"); return 0; }
3.merge
#include<iostream> using namespace std; #include <vector> #include <algorithm> void myPrint(int val) { cout << val << " "; } //常用排序算法 merge void test01() { vector<int>v1; vector<int>v2; for (int i = 0; i < 10; i++) { v1.push_back(i); v2.push_back(i+1); } //目标容器 vector<int>vTarget; //提前给目标容器分配空间 vTarget.resize(v1.size() + v2.size()); merge(v1.begin(), v1.end(), v2.begin(), v2.end(), vTarget.begin()); for_each(vTarget.begin(), vTarget.end(), myPrint); cout << endl; } int main() { test01(); system("pause"); return 0; }
4.reverse
#include<iostream> using namespace std; #include <vector> #include <algorithm> //常用排序算法 reverse void myPrint(int val) { cout << val << " "; } void test01() { vector<int>v; v.push_back(10); v.push_back(30); v.push_back(50); v.push_back(20); v.push_back(40); cout << "反转前: " << endl; for_each(v.begin(), v.end(), myPrint); cout << endl; cout << "反转后: " << endl; reverse(v.begin(), v.end()); for_each(v.begin(), v.end(), myPrint); cout << endl; } int main() { test01(); system("pause"); return 0; }
标签:nal 分配 shuf algo stream for eve shuffle res
原文地址:https://www.cnblogs.com/xiximayou/p/12114762.html