C++ vector

排序vector，并清除相同項目：

#include <algorithm>
vector<int> vec;

bool cmp(const int &tmpa, const int &tmpb) {
    return tmpa < tmpb; // 降序改爲大寫
}

int main(void) {
    vec init;
    std::sort(vec.begin(), vec.end(), cmp);
    vector<int>::iterator iter = std::unique(vec.begin(), vec.end());
    vec.erase(iter, vec.end());
}

int main() {
    vector<int> vec;
    vec.push_back(1);
    vec.push_back(3);
    vec.push_back(2);
    vec.push_back(1);
    vec.push_back(9);
    vec.push_back(3);
    for (int tmpi = 0; tmpi < vec.size(); tmpi++) printf("%d ", vec[tmpi]);
    printf("
");
    std::sort(vec.begin(), vec.end(), sortcmp);
    for (int tmpi = 0; tmpi < vec.size(); tmpi++) printf("%d ", vec[tmpi]);
    printf("
");
    vector<int>::iterator iter = unique(vec.begin(), vec.end());
    vec.erase(iter, vec.end());
    for (int tmpi = 0; tmpi < vec.size(); tmpi++) printf("%d ", vec[tmpi]);
    printf("
");
}