C++ 程序以在 STL 中实现列表
列表是一种序列容器,允许非连续的内存分配。与向量相比,列表有较慢的遍历,但一旦找到了位置,插入和删除速度很快。
函数和描述
From main(), we have called following functions: fl.resize() = Returns the resize of list. fl.push_front() = It is used to push elements into a list from the front. fl.remove() = Deletes elements from list. fl.unique() = Deletes duplicate elements from list. fl.reverse() = Reverses the list. fl.front() = Returns the front element of list.
示例代码
#include<iostream> #include <list> #include <string> #include <cstdlib> using namespace std; int main() { list<int> l; list<int>::iterator it; int c, i; while (1) { cout<<"1.Insert Element at the Front"<<endl; cout<<"2.Insert Element at the End"<<endl; cout<<"3.Delete Element at the Front"<<endl; cout<<"4.Delete Element at the End"<<endl; cout<<"5.Front Element of List"<<endl; cout<<"6.Last Element of the List"<<endl; cout<<"7.Size of the List"<<endl; cout<<"8.Resize List"<<endl; cout<<"9.Remove Elements with Specific Values"<<endl; cout<<"10.Remove Duplicate Values"<<endl; cout<<"11.Reverse the order of elements"<<endl; cout<<"12.Display the List"<<endl; cout<<"13.Exit"<<endl; cout<<"Enter your Choice: "; cin>>c; switch(c) { case 1: cout<<"Enter value to be inserted at the front: "; cin>>i; l.push_front(i); break; case 2: cout<<"Enter value to be inserted at the end: "; cin>>i; l.push_back(i); break; case 3: i= l.front(); l.pop_front(); cout<<"Element "<<i<<" deleted"<<endl; break; case 4: i= l.back(); l.pop_back(); cout<<"Element "<<i<<" deleted"<<endl; break; case 5: cout<<"Front Element of the List: "; cout<<l.front()<<endl; break; case 6: cout<<"Last Element of the List: "; cout<<l.back()<<endl; break; case 7: cout<<"Size of the List: "<<l.size()<<endl; break; case 8: cout<<"Enter new size of the List: "; cin>>i; if (i <= l.size()) l.resize(i); else l.resize(i, 0); break; case 9: cout<<"Enter element to be deleted: "; cin>>i; l.remove(i); break; case 10: l.unique(); cout<<"Duplicate Items Deleted"<<endl; break; case 11: l.reverse(); cout<<"List reversed"<<endl; break; case 12: cout<<"Elements of the List: "; for (it = l.begin(); it != l.end(); it++) cout<<*it<<" "; cout<<endl; break; case 13: exit(1); break; default: cout<<"Wrong Choice"<<endl; } } return 0; }
输出
1.Insert Element at the Front 2.Insert Element at the End 3.Delete Element at the Front 4.Delete Element at the End 5.Front Element of List 6.Last Element of the List 7.Size of the List 8.Resize List 9.Remove Elements with Specific Values 10.Remove Duplicate Values 11.Reverse the order of elements 12.Display the List 13.Exit Enter your Choice: 1 Enter value to be inserted at the front: 1 1.Insert Element at the Front 2.Insert Element at the End 3.Delete Element at the Front 4.Delete Element at the End 5.Front Element of List 6.Last Element of the List 7.Size of the List 8.Resize List 9.Remove Elements with Specific Values 10.Remove Duplicate Values 11.Reverse the order of elements 12.Display the List 13.Exit Enter your Choice: 1 Enter value to be inserted at the front: 2 1.Insert Element at the Front 2.Insert Element at the End 3.Delete Element at the Front 4.Delete Element at the End 5.Front Element of List 6.Last Element of the List 7.Size of the List 8.Resize List 9.Remove Elements with Specific Values 10.Remove Duplicate Values 11.Reverse the order of elements 12.Display the List 13.Exit Enter your Choice: 3 Element 2 deleted 1.Insert Element at the Front 2.Insert Element at the End 3.Delete Element at the Front 4.Delete Element at the End 5.Front Element of List 6.Last Element of the List 7.Size of the List 8.Resize List 9.Remove Elements with Specific Values 10.Remove Duplicate Values 11.Reverse the order of elements 12.Display the List 13.Exit Enter your Choice: 4 Element 1 deleted 1.Insert Element at the Front 2.Insert Element at the End 3.Delete Element at the Front 4.Delete Element at the End 5.Front Element of List 6.Last Element of the List 7.Size of the List 8.Resize List 9.Remove Elements with Specific Values 10.Remove Duplicate Values 11.Reverse the order of elements 12.Display the List 13.Exit Enter your Choice: 2 Enter value to be inserted at the end: 5 1.Insert Element at the Front 2.Insert Element at the End 3.Delete Element at the Front 4.Delete Element at the End 5.Front Element of List 6.Last Element of the List 7.Size of the List 8.Resize List 9.Remove Elements with Specific Values 10.Remove Duplicate Values 11.Reverse the order of elements 12.Display the List 13.Exit Enter your Choice: 1 Enter value to be inserted at the front: 6 1.Insert Element at the Front 2.Insert Element at the End 3.Delete Element at the Front 4.Delete Element at the End 5.Front Element of List 6.Last Element of the List 7.Size of the List 8.Resize List 9.Remove Elements with Specific Values 10.Remove Duplicate Values 11.Reverse the order of elements 12.Display the List 13.Exit Enter your Choice: 1 Enter value to be inserted at the front: 7 1.Insert Element at the Front 2.Insert Element at the End 3.Delete Element at the Front 4.Delete Element at the End 5.Front Element of List 6.Last Element of the List 7.Size of the List 8.Resize List 9.Remove Elements with Specific Values 10.Remove Duplicate Values 11.Reverse the order of elements 12.Display the List 13.Exit Enter your Choice: 12 Elements of the List: 7 6 5 1.Insert Element at the Front 2.Insert Element at the End 3.Delete Element at the Front 4.Delete Element at the End 5.Front Element of List 6.Last Element of the List 7.Size of the List 8.Resize List 9.Remove Elements with Specific Values 10.Remove Duplicate Values 11.Reverse the order of elements 12.Display the List 13.Exit Enter your Choice: 1 Enter value to be inserted at the front: 5 1.Insert Element at the Front 2.Insert Element at the End 3.Delete Element at the Front 4.Delete Element at the End 5.Front Element of List 6.Last Element of the List 7.Size of the List 8.Resize List 9.Remove Elements with Specific Values 10.Remove Duplicate Values 11.Reverse the order of elements 12.Display the List 13.Exit Enter your Choice: 1 Enter value to be inserted at the front: 4 1.Insert Element at the Front 2.Insert Element at the End 3.Delete Element at the Front 4.Delete Element at the End 5.Front Element of List 6.Last Element of the List 7.Size of the List 8.Resize List 9.Remove Elements with Specific Values 10.Remove Duplicate Values 11.Reverse the order of elements 12.Display the List 13.Exit Enter your Choice: 12 Elements of the List: 4 5 7 6 5 1.Insert Element at the Front 2.Insert Element at the End 3.Delete Element at the Front 4.Delete Element at the End 5.Front Element of List 6.Last Element of the List 7.Size of the List 8.Resize List 9.Remove Elements with Specific Values 10.Remove Duplicate Values 11.Reverse the order of elements 12.Display the List 13.Exit Enter your Choice: 10 Duplicate Items Deleted 1.Insert Element at the Front 2.Insert Element at the End 3.Delete Element at the Front 4.Delete Element at the End 5.Front Element of List 6.Last Element of the List 7.Size of the List 8.Resize List 9.Remove Elements with Specific Values 10.Remove Duplicate Values 11.Reverse the order of elements 12.Display the List 13.Exit Enter your Choice: 5 Front Element of the List: 4 1.Insert Element at the Front 2.Insert Element at the End 3.Delete Element at the Front 4.Delete Element at the End 5.Front Element of List 6.Last Element of the List 7.Size of the List 8.Resize List 9.Remove Elements with Specific Values 10.Remove Duplicate Values 11.Reverse the order of elements 12.Display the List 13.Exit Enter your Choice: 12 Elements of the List: 4 5 7 6 5 1.Insert Element at the Front 2.Insert Element at the End 3.Delete Element at the Front 4.Delete Element at the End 5.Front Element of List 6.Last Element of the List 7.Size of the List 8.Resize List 9.Remove Elements with Specific Values 10.Remove Duplicate Values 11.Reverse the order of elements 12.Display the List 13.Exit Enter your Choice: 11 List reversed 1.Insert Element at the Front 2.Insert Element at the End 3.Delete Element at the Front 4.Delete Element at the End 5.Front Element of List 6.Last Element of the List 7.Size of the List 8.Resize List 9.Remove Elements with Specific Values 10.Remove Duplicate Values 11.Reverse the order of elements 12.Display the List 13.Exit Enter your Choice: 12 Elements of the List: 5 6 7 5 4 1.Insert Element at the Front 2.Insert Element at the End 3.Delete Element at the Front 4.Delete Element at the End 5.Front Element of List 6.Last Element of the List 7.Size of the List 8.Resize List 9.Remove Elements with Specific Values 10.Remove Duplicate Values 11.Reverse the order of elements 12.Display the List 13.Exit Enter your Choice: 13
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