C++ Deque insert()30 Aug 2024 | 1 min read C++ Deque insert() function inserts new element just before the specified position pos and the size of the container increases by the number of elements are inserted. Insertion of an element can be done either from front or from the back. SyntaxParameterpos: Position before which the new element is to be inserted. val: New value to be inserted. n: Number of times the value to be inserted. (first,last): It defines the range of the elements which are to be inserted. Return valueIt returns an iterator to the newly constructed element. Example 1Let's see a simple example Output: java C++ .net C In this example, insert() function inserts new element i.e "C++" at the second position. Example 2Let's see a simple example Output: 1 5 5 2 3 4 In this example, insert() function inserts '5' element twice at second and third position. Next TopicC++ Deque |
C++ Deque back() C++ is used to access the last element of the deque container. Syntax reference back(); Parameter It does not contain any parameter. Return value It returns a reference to the last element of the deque container. Example 1 Let's see a simple example #include <iostream> #include<deque> using namespace std; int main() { deque<int>...
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C++ Deque cbegin() C++ returns a constant iterator pointing to the first element of the deque container. This iterator can be incremented or decremented just like the iterator returned by the begin() function. If the container is empty then the returned iterator will be equal to...
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C++ Deque pop_back() C++ removes the last element from the the deque container and the size of the deque is reduced by one. Syntax void pop_back(); Parameter It does not contain any parameter. Return value It does not return any value. Example Let's see a simple example #include <iostream> #include<deque> using namespace std; int main() { ...
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C++ Deque rbegin() C++ returns a reverse iterator pointing to the last element of the container. An iterator can be incremented or decremented but it cannot modify the content of deque. Where, rbegin() stands for reverse beginning. Note: Reverse iterators are those which iterate from backwards and move...
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C++ Deque assign() C++ assigns new contents to the deque container and the size of the container is modified accordingly. Syntax void assign(InputIterator first, InputIterator last); void assign(int n,value_type val); Parameter (first,last): It defines the range between which the new elements to be inserted. n: It defines the new size of...
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C++ Deque at() C++ is used to access the element at specified position pos. Note: If pos is greater than the size of the container, then the function throws an exception i.e "out of range". Syntax reference at(size_type pos); Parameter pos: It defines the position of an element which is...
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C++ Deque cend() C++ returns a constant iterator pointing to the past-the-last element. An iterator can be incremented or decremented but it cannot modify the content of a deque. If the container is empty then cend() function returns the same as cbegin() function. Syntax const_iterator cend(); Parameter It does not contain...
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C++ Deque emplace() C++ inserts a new element just before the specified position and the size of the container is increased by one. Syntax iterator emplace(const_iterator position,value_type val); Parameter position: It defines the position before which the new element is to be inserted. val: New value which is to be...
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C++ Deque emplace_front() C++ adds a new element to the beginning of the deque container and the size of the container is increased by one. Syntax void emplace_front(value_type val); Parameter val: New value is to be inserted at the beginning of the deque. Return value It does not return any value. Example 1 Let's...
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C++ Deque push_back() C++ adds a new element at the end of the deque container and the size of the container is increased by one. Syntax void push_back(value_type val); Parameter val: New value to be inserted at the end of the deque container. Return value It does not return any value. Example...
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