Login
\\
Swaps elements of two ranges
Key Facts
Gyroscopic Couple: The rate of change of angular momentum (= Moment of Inertia.
= Angular velocity
= Angular velocity of precession.
Blaise Pascal (1623-1662) was a French mathematician, physicist, inventor, writer and Catholic philosopher.
Leonhard Euler (1707-1783) was a pioneering Swiss mathematician and physicist.
Definition
The swap_ranges() algorithm is defined in the standard header <algorithm> and in the nonstandard backward-compatibility header <algo.h>.Interface
#include <algorithm> template < class ForwardIterator1, class ForwardIterator2 > ForwardIterator2 swap_ranges( ForwardIterator1 first1, ForwardIterator1 last1, ForwardIterator2 first2 );Parameters:
| Parameter | Description |
|---|---|
| first1 | A forward iterator pointing to the first position of the first range whose elements are to be exchanged |
| last1 | A forward iterator pointing to one past the final position of the first range whose elements are to be exchanged |
| first2 | A forward iterator pointing to the first position of the second range whose elements are to be exchanged |
Description
Swap_ranges swaps the elements of two sequence, that is each element at a position in the fi rst sequence is replaced by the element at the same position in the second sequence and vice-versa.References
Example:
Example - swap_ranges algorithm
Problem
This program illustrates the functionality of swap_ranges algorithm.
Workings
#include <vector> #include <deque> #include <algorithm> #include <iostream> using namespace std; int main() { vector <int> vec1; deque <int> deq1; vector <int>::iterator vec1Iter1; deque<int>::iterator deq1Iter; int i,j; for (i = 10; i <= 15; i++) vec1.push_back(i); for (j =24; j <= 29; j++) deq1.push_back(j); cout <<"Vector vec1 data:\n"; for (vec1Iter1 = vec1.begin(); vec1Iter1 != vec1.end(); vec1Iter1++) cout <<*vec1Iter1<<" "; cout <<endl; cout <<"\nDeque deq1 data:\n"; for (deq1Iter = deq1.begin(); deq1Iter != deq1.end(); deq1Iter++) cout <<*deq1Iter<<" "; cout <<endl; swap_ranges(vec1.begin(), vec1.end(), deq1.begin()); cout <<"\nAfter the swap_range(), vector vec1 data:\n"; for (vec1Iter1 = vec1.begin(); vec1Iter1 != vec1.end(); vec1Iter1++) cout <<*vec1Iter1<<" "; cout <<endl; cout <<"\nAfter the swap_range() deque deq1 data:\n"; for (deq1Iter = deq1.begin(); deq1Iter != deq1.end(); deq1Iter++) cout <<*deq1Iter<<" "; cout <<endl; return 0; }
Solution
Output:
Vector vec1 data:
10 11 12 13 14 15 Deque deq1 data:
24 25 26 27 28 29 After the swap_range(), vector vec1 data:
24 25 26 27 28 29 After the swap_range() deque deq1 data:
10 11 12 13 14 15
10 11 12 13 14 15 Deque deq1 data:
24 25 26 27 28 29 After the swap_range(), vector vec1 data:
24 25 26 27 28 29 After the swap_range() deque deq1 data:
10 11 12 13 14 15
References