C++ STL algorithm, another replace() program example

Compiler: Visual C++ Express Edition 2005

Compiled on Platform: Windows XP Pro SP2

Header file: Standard

Additional project setting: Set project to be compiled as C++

Project -> your_project_name Properties -> Configuration Properties -> C/C++ -> Advanced -> Compiled As: Compiled as C++ Code (/TP)

Other info: none

To do: Using the C++ replace() to examine each element in a range and replaces it if it matches a specified value in C++ programming

To show: How to use the C++ algorithm, replace() to examine each element in a range and replaces it if it matches a specified value in C++ programming

// C++ STL algorithm, replace()

#include <vector>

#include <algorithm>

#include <iostream>

using namespace std;

int main(void)

{

// vector container

vector <int> vec1;

// vector iterator

vector <int>::iterator Iter1;

int i, j;

// push data in range

for(i = 0; i <= 9; i++)

vec1.push_back(i);

for(j = 0; j <= 2; j++)

vec1.push_back(5);

// randomly shuffle the data

random_shuffle(vec1.begin(), vec1.end());

cout<<"The original vec1 vector data randomly shuffled is: ";

for(Iter1 = vec1.begin(); Iter1 != vec1.end(); Iter1++)

cout<<*Iter1<<" ";

cout<<endl;

// replace elements with other values

replace (vec1.begin( ), vec1.end( ), 3, 23);

replace (vec1.begin( ), vec1.end( ), 7, 77);

replace (vec1.begin( ), vec1.end( ), 0, 21);

cout<<"\nThe vec1 vector data with replacement values of 0/21, 3/23, 7/77 is: ";

for(Iter1 = vec1.begin(); Iter1 != vec1.end(); Iter1++)

cout<<*Iter1<<" ";

cout<<endl;

return 0;

}

Output examples:

The original vec1 vector data randomly shuffled is: 5 1 9 2 0 5 7 3 4 6 8 5 5

The vec1 vector data with replacement values of 0/21, 3/23, 7/77 is: 5 1 9 2 21 5 77 23 4 6 8 5 5

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