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  1. #include <iostream>
  2. #include <vector>
  3. #include <algorithm>
  4. #include <iomanip>
  5. #include <random>
  6. #include <chrono>
  7. #include <iterator>
  8. #include <cmath>
  9.  
  10. using namespace std;
  11.  
  12. int main()
  13. {
  14.     default_random_engine gen(chrono::system_clock::now().time_since_epoch().count());
  15.     uniform_real_distribution<double> distribution(-99, 99);
  16.     const int vector_size = 10;
  17. 	vector<double> vec(vector_size);
  18. 	generate_n( begin(vec), vector_size, [&]{ return distribution(gen); } );
  19.  
  20. 	cout << fixed << setprecision(1);
  21. 	copy( begin(vec), end(vec), ostream_iterator<double>(cout, ", ") );
  22.  
  23. 	auto absComp = [](double a, double b){ return abs(a) < abs(b); };
  24.     auto max = max_element( begin(vec), end(vec), absComp );
  25.     cout << "\n(by absolute) max elements is " << *max << " at pos " << distance( begin(vec), max );
  26.  
  27. 	auto min = min_element( begin(vec), end(vec), absComp );
  28.     cout << "\n(by absolute) min elements is " << *min << " at pos " << distance( begin(vec), min );
  29.  
  30.     auto after_first_positive = begin(vec);
  31.     while (*after_first_positive++ < 0.0 && after_first_positive != end(vec));
  32. 	double sum = accumulate( after_first_positive, end(vec), 0.0 );
  33.     cout << "\nsum of elements after the first positive element is " << sum;
  34.  
  35. 	const double a = 10.0;
  36.     cout << "\nerasing elements less than " << a << endl;
  37.     vec.erase(remove_if( begin(vec), end(vec), bind2nd( less<double>(), a ) ), end(vec));
  38.  
  39.     copy( begin(vec), end(vec), ostream_iterator<double>(cout, ", ") );
  40.     return 0;
  41. }
Success #stdin #stdout 0s 3032KB
comments (?)
stdin
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Standard input is empty
stdout
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-41.0, -74.8, -75.3, -86.5, -19.5, -14.8, 62.8, -86.6, -67.0, 36.3, 
(by absolute) max elements is -86.6 at pos 7
(by absolute) min elements is -14.8 at pos 5
sum of elements after the first positive element is -117.2
erasing elements less than 10.0
62.8, 36.3,
https://ideone.com/ocbULX
language:
C++14 (gcc 8.3)
created:
10 years ago
visibility:
public

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