删除所有出现的元素,并从列表中删除一些特定的元素。C ++ STL
list.remove()和list.remove_if()函数
remove()函数用于从列表中删除所有出现的给定元素,而remove_if()函数用于从列表中删除某些特定元素的集合。
示例
List elements are11
22
33
44
55
11
22
Element to remove: 11
List element after removing 11
22
33
44
55
22
Condition to remove some specific elements: all ODD numbers
List element after removing all ODD numbers
22
44
22
程序:
#include <iostream>#include <list>
using namespace std;
int main() {
//声明列表
list<int> iList = {11, 22, 33, 44, 55, 11, 22};
//在列表中声明迭代器
list<int>::iterator l_iter;
//打印列表元素
cout<<"List elements are"<<endl;
for (l_iter = iList.begin(); l_iter != iList.end(); l_iter++)
cout<< *l_iter<<endl;
//从列表中删除11-
iList.remove(11);
cout<<"List elements after removing 11"<<endl;
for (l_iter = iList.begin(); l_iter != iList.end(); l_iter++)
cout<< *l_iter<<endl;
//删除所有奇数
iList.remove_if([](int n){return (n%2!=0); });
cout<<"List elements after removing all ODD numbers"<<endl;
for (l_iter = iList.begin(); l_iter != iList.end(); l_iter++)
cout<< *l_iter<<endl;
return 0;
}
输出结果
List elements are11
22
33
44
55
11
22
List elements after removing 11
22
33
44
55
22
List elements after removing all ODD numbers
22
44
22
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