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Is there an easier way to turn an array in to a set using c++ rather than looping through its elements?
Preferably using the standard template library
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Therefore the Array can be converted into the Set with the help of Collections. addAll() method.
Convert an array to Set using begin() and end() In this method, we use STL function to convert begin() and end() to convert pointers to iterators. Then we will pass the iterators to set constructor to convert an array to a set. In this example we converted an array to a set in C++.
you can change the integers pointed at directly via the * operator, so *array = 99; will change the first element, *(array+1) = 98; the second and so on. you can also, more naturally use the [] operator. so in your function array[0] = 99; will actually change the original array. Save this answer.
To convert an array of strings to an array of numbers, call the map() method on the array, and on each iteration, convert the string to a number. The map method will return a new array containing only numbers.
As for all standard library container types, use the constructor:
std::set<T> set(begin(array), end(array));
int a[] = {1,2,3,4};
std::set<int> s{1,2,3,4};
std::set<int> s1{std::begin(a), std::end(a)};
See: Here
27
#include <set>
#include <utility>
#include <iostream>
using namespace std;
auto main()
-> int
{
static int const a[] = {3, 1, 4, 1, 5, 9, 2, 6, 5, 4};
set<int> const numbers( begin( a ), end( a ) );
for( auto const v : numbers ) { cout << v; }
cout << endl;
}
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