Swapping of subranges from different containers in C++
A container is a holder object that holds a collection of other objects. They are implemented as class templates, which allows a great flexibility in the types supported as elements.
Given some elements in vector and list, swap some of their elements.
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// C++ program to swap subranges from different containers#include <algorithm>#include <iostream>#include <list>#include <vector>using namespace std; int main(){ vector<int> v = { -10, -15, -30, 20, 500 }; list<int> lt = { 10, 50, 30, 100, 50 }; /* swap_ranges() swaps the values starting from the beginning to 3rd last values as per the parameters. Hence (-10, -15, -30) are swapped with (10, 50, 30). */ swap_ranges(v.begin(), v.begin() + 3, lt.begin()); for (int n : v) cout << n << ' '; cout << '\n'; for (int n : lt) cout << n << ' '; cout << endl;} |
Output:
10 50 30 20 500 -10 -15 -30 100 50
We can also swap ranges in two vectors.
// C++ program to swap subranges from different containers#include <algorithm>#include <iostream>#include <vector>using namespace std; int main(){ vector<int> v1 = { -10, -15, -30, 20, 500 }; vector<int> v2 = { 10, 50, 30, 100, 50 }; /* swap_ranges() swaps the values starting from the beginning to 3rd last values as per the parameters. Hence (-10, -15, -30) are swapped with (10, 50, 30). */ swap_ranges(v1.begin(), v1.begin() + 3, v2.begin()); for (int n : v1) cout << n << ' '; cout << '\n'; for (int n : v2) cout << n << ' '; cout << endl;} |
Output:
10 50 30 20 500 -10 -15 -30 100 50
