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C++ STL Algorithm
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#include <queue> | |
using namespace std; | |
int main(){ | |
queue<string> Q; | |
Q.push("red"); | |
Q.push("yellow"); | |
Q.push("blue"); | |
Q.front(); //取出队头的元素 | |
Q.size(); //返回队列的元素数 | |
Q.pop(); //从队列里取出元素并删除 | |
Q.empty(); //队列为空时返回true | |
} |
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#include <algorithm> | |
#include <iostream> | |
using namespace std; | |
// 使用搜索前先排序 | |
int main(){ | |
int A[10] = {1,1,2,3,4,5,6,10,9,15}; | |
int *pos; | |
int idx; | |
bool h; | |
//pos = lower_bound(A, A+10, 3) //返回第一个大于或等于的元素的指针 3 | |
pos = upper_bound(A, A+10, 3); //返回第一个大于的元素的指针 4 | |
h = binary_search(A, A+10, 3); //搜索是否存在,存在则返回true | |
idx = distance(A, pos); | |
cout << idx << endl; | |
return 0; | |
} |
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#include <stack> | |
using namespace std; | |
int main(){ | |
stack<int> S; | |
S.push(3); // 压入数据 | |
S.top(); //返回栈顶的元素 | |
S.pop(); //删除栈顶的元素 | |
S.size(); //返回栈的元素数 | |
S.empty(); //栈空的时候返回true | |
} |
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#include <vector> | |
int main(){ | |
vector<int> V; | |
V.push_back(1); //在向量末尾添加元素 | |
V.size(); | |
V.pop_back(); //删除向量的最后的一个元素 | |
V.begin(); //返回一个指向开头的迭代器 | |
V.end(); //返回指向末尾的得带器; | |
V.insert(p,x) // 向着位置P处插入元素P | |
V.clear(); //清楚向量中的所有的元素 | |
V.erase(); //删除向量中位置P的元素 | |
} |
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