std::remove()

 

#include <iostream>
#include <algorithm>
#include <deque>

using namespace std;

int main()
{
    // 填充容器
    deque<unsigned> deqUint;
    const unsigned uiNumber = 7;
    for (unsigned i = 1; i < uiNumber; ++i)
    {
        deqUint.push_back(i);
        deqUint.push_front(i);
    }

    // 容器内的指定元素,迭代器并不知晓如何删除元素
    deque<unsigned>::iterator iter = remove(deqUint.begin(), deqUint.end(), 3);

    // 逻辑上有效的元素个数
    const int iRealNumber = distance(deqUint.begin(), iter);

    // 计算逻辑上被移除的元素个数
    const int iRemovedNumber = distance(iter, deqUint.end());

    // 移除末尾无效元素
    deqUint.erase(iter, deqUint.end());
    return EXIT_SUCCESS;
}