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I wish to insert into a c++ vector at a known position. I know the c++ library has an insert() function that takes a position and the object to insert but the position type is an iterator. I wish to insert into the vector like I would insert into an array, using a specific index.
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Inserting a single element at specific position in vectoriterator insert (const_iterator pos, const value_type& val); iterator insert (const_iterator pos, const value_type& val); It Inserts a copy of give element “val”, before the iterator position “pos” and also returns the iterator pointing to new inserted element.
Using the insert() Function on Vectors. The insert() method can be used to insert single or multiple elements into a given vector in different ways, for different cases.
Adding elements in a vector in R programming – append() method. append() method in R programming is used to append the different types of integer values into a vector in the last. Return: Returns the new vector after appending given value.
Insertion: Insertion in array of vectors is done using push_back() function. Above pseudo-code inserts element 35 at every index of vector <int> A[n]. Traversal: Traversal in an array of vectors is perform using iterators. Above pseudo-code traverses vector <int> A[n] at each index using starting iterators A[i].
This should do what you want.
vector<int>myVec(3);
myVec.insert(myVec.begin() + INTEGER_OFFSET, DATA);
Please be aware that iterators may get invalidated when vector get reallocated. Please see this site.
EDIT: I'm not sure why the other answer disappeared...but another person mentioned something along the lines of:
myVec.insert(INDEX, DATA);
If I remember correctly, this should be just fine.
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