## Find index of element in vector c++

In this post, we will see how to find index of the first occurrence of a given element in vector in C++. 1. std::find + std::distance. The simplest solution is to use the std::find algorithm defined in the

## k = find (X) returns a vector containing the linear indices of each nonzero element in array X. If X is a vector, then find returns a vector with the same orientation as X. If X is a multidimensional array, then find returns a column vector of the linear indices of the result. If X contains no nonzero elements or is empty, then find returns an

The function uses operator== to compare the individual elements to val . else std::cout << "Element not found in myints\n" ; // using std::find with vector and std::find. #include

### I am trying to get the index of an element in a vector of strings , to use it as an index in another vector of int type, is this possible ? Example: vector

Returns a reference to the element at position n in the vector. The function are the reference types to the elements of the container (see vector member types). Returns a reference to the element at position n in the vector container. are the reference types to the elements of the container (see vector member types). 26 Oct 2018 Nevertheless for an std::vector , it's not such a good deal because the How can we use a modern for loop and get access to the index of the Return v.end() for empty vectors. std::vector

### Find Maximum and Minimum element in a Set in C++ STL; How to find the minimum and maximum element of an Array using STL in C++? How to find the maximum element of an Array using STL in C++? Last element of vector in C++ (Accessing and updating) How to find the sum of elements of a Vector using STL in C++? How to find common elements between two

26 Oct 2018 Nevertheless for an std::vector , it's not such a good deal because the How can we use a modern for loop and get access to the index of the Return v.end() for empty vectors. std::vector

## Example. To find the largest or smallest element stored in a vector, you can use the methods std::max_element and std::min_element, respectively.These methods are defined in header. If several elements are equivalent to the greatest (smallest) element, the methods return the iterator to the first such element.

I am trying to get the index of an element in a vector of strings , to use it as an index in another vector of int type, is this possible ? Example: vector The function uses operator== to compare the individual elements to val . else std::cout << "Element not found in myints\n" ; // using std::find with vector and std::find. #include

It returns the reference of element at index n in vector. If index n is out of range i.e. greater then size of vector then it will throw out_of_range exception. Let’s access element at index 3 using at() i.e. I need to find an element position in an std::vector to use it for referencing an element in another vector: however vector::size() returns size_t which corresponds to an unsigned integral type that can't directly store -1. Now I want to get the position of old_name in the Names vector, to use it in accessing certain element in Numbers vector. So that I can say: Numbers[position] = 3 ; // or whatever value assigned here. I tried using: vector