STL_Algorithm5-math: random_shuffle, count, count_if, min_element, max_element, accumulate, for_each, transform

// Math.cpp : Defines the entry point for the console application.

//

#include <iostream>

#include <algorithm>

#include <numeric>

#include <vector>

#include <iterator>

using std::cout;

using std::endl;

bool greater9( int );

void outputSquare( int );

int calculateCube( int );

int main()

{

const int SIZE = 10;

int a1[] = { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 };

std::vector< int > v( a1, a1 + SIZE );

std::ostream_iterator< int > outputIt( cout, " " );

cout<<"Vector v before random_shuffle: ";

std::copy( v.begin(), v.end(), outputIt );

std::random_shuffle( v.begin(), v.end() );

cout<< "/nVector v after random_shuffle: ";

std::copy( v.begin(), v.end(), outputIt );

int a2[] = { 100, 2, 8, 1, 50, 3, 8, 8, 9, 10 };

std::vector< int > v2( a2, a2 + SIZE );

cout<<"/n/nVector v2 contains: ";

std::copy( v2.begin(), v2.end(), outputIt );

int result = std::count( v2.begin(), v2.end(), 8 );

cout<<"/nNumber of elements matching 8: "<<result;

result = std::count_if( v2.begin(), v2.end(), greater9 );

cout<<"/nNumber of elements greater than 9: "<<result;

cout<<"/n/nMinimum element in Vector v2 is: "

<<*(std::min_element( v2.begin(), v2.end() ) );

cout<<"/n/nMaxmum element in Vector v2 is: "

<<*(std::max_element( v2.begin(), v2.end() ) );

cout<<"/n/nThe total of the elements in Vector v is: "

<< std::accumulate( v.begin(), v.end(), 0 );

cout<< "/n/nThe square of every integer in Vector v is:/n";

std::for_each( v.begin(), v.end(), outputSquare );

std::vector< int > cubes( SIZE );

std::transform( v.begin(), v.end(), cubes.begin(), calculateCube );

cout<< "/n/nThe cube of every integer in Vector v is:/n";

std::copy( cubes.begin(), cubes.end(), outputIt );

cout<<endl;

return 0;

}

bool greater9( int value )

{

return value > 9;

}

void outputSquare( int value )

{

cout<<value * value<< ' ';

}

int calculateCube( int value )

{

return value*value*value;

}