boost::algorithm::any_of_equal() in C++ library
The any_of_equal() function in C++ boost library is found under the header ‘boost/algorithm/cxx11/any_of.hpp’ which tests if any of the elements of a sequence against the value passed is same. It takes a sequence and a value, and returns true if the any of the elements are same in the sequence to the value passed.
Syntax:
bool any_of_equal ( InputIterator first, InputIterator last, const &value)
or
bool any_of_equal ( const Range &R, const &value)
Parameters: The function accepts parameters as described below:
- first: It specifies the input iterators to the initial positions in a sequence.
- second: It specifies the input iterators to the final positions in a sequence.
- value: It specifies a value which is to be checked against for any the elements of the sequence.
- R: It is the complete sequence.
Return Value: The function returns true if any of the elements of the sequence is equal to value, else it returns false.
Below is the implementation of the above approach:
Program-1:
// C++ program to implement the// above mentioned function #include <bits/stdc++.h>#include <boost/algorithm/cxx11/any_of.hpp>using namespace std; // Drivers codeint main(){ // Declares the sequence with int c[] = { 1, 2, 3 }; // Run the function bool ans = boost::algorithm::any_of_equal(c, 1); // Condition to check if (ans == 1) cout << "at least one elements is 1"; else cout << "all elements are not 1"; return 0;} |
Output:
at least one elements is 1
Program-2:
// C++ program to implement the// above mentioned function #include <bits/stdc++.h>#include <boost/algorithm/cxx11/any_of.hpp>using namespace std; // Drivers codeint main(){ // Declares the sequence int a[] = { 1, 2, 3, 6 }; // Run the function bool ans = boost::algorithm::any_of_equal(a, a + 4, 4); // Condition to check if (ans == 1) cout << "at least one element is 4"; else cout << "all elements are not 4"; return 0;} |
Output:
all elements are not 4
