C++ Deque erase()30 Aug 2024 | 1 min read C++ Deque erase() function removes the element from the specified position or range and this effectively reduces the size of the deque by the number of elements removed. SyntaxParameterpos: It defines the position at which the element to be removed from the deque. (first,last): It defines the range within deque between which the elements to be removed. Return valueIt returns an iterator pointing to the element that followed the last element removed by the function. Example 1Let's see a simple example when element is removed within a range. Output: Content of deque:1 2 3 4 After erasing second and third element,Content of deque:1 3 4 Example 2Let's see a simple example when the element is removed at the specified position Output: Content of deque:mango ,apple ,strawberry ,kiwi , Now,Content of deque:mango ,apple ,kiwi , Next TopicC++ Deque |
C++ Deque begin() C++ returns an iterator pointing to the first element of the deque container. If the container is empty then the returned iterator will be equal to the end(). Syntax iterator begin(); Parameter It does not contain any parameter. Return value It returns an iterator pointing to the first...
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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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C++ Deque crend() C++ is used to return an iterator pointing to the element preceding the first element of the deque container. An iterator can be incremented or decremented but it cannot modify the content of deque. Syntax const_reverse_iterator crend(); Parameter It does not contain any parameter. Return value It returns a...
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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 operator=() C++ assigns new contents to the container and replacing the current content of same type. Size of the deque can be modified accordingly. Syntax deque& operator(deque& x); Parameter x: It is a deque container whose content is to be copied into an another deque object. Return value It returns...
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Deque stands for double ended queue. It generalizes the queue data structure i.e insertion and deletion can be performed from both the ends either front or back. Syntax for creating a deque object: deque<object_type> deque_name; Functions Method Description assign() It assigns new content and replacing the old one. emplace() It adds a new element...
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C++ Deque pop_front() C++ removes the first element from the deque and the size of the container is reduced by one. Syntax void pop_front(); Parameter It does not contain any parameter. Return value It does not return any value. Example 1 Let's see a simple example #include <iostream> #include<deque> using namespace std; int main() { ...
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C++ emplace_back() C++ adds a new element at the end of the deque and the size of the container is increased by one. Syntax void emplace_back(value_type val); Parameter val: New value to be inserted at the end of the deque. Return value It does not return any value. Example 1 Let's see a...
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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 empty() C++ checks whether the container is empty or not. If the container is empty, it returns 1 otherwise 0. Syntax void empty() Parameter It does not contain any parameter. Return value It does not return any value. Example 1 Let's see a simple example when deque is not empty. #include <iostream> #include<deque> using...
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