<deque>

operator!=

Tests if the deque object on the left side of the operator is not equal to the deque object on the right side.

operator<=

Tests if the deque object on the left side of the operator is less than or equal to the deque object on the right side.

operator>

Tests if the deque object on the left side of the operator is greater than the deque object on the right side.

swap (<deque>)

Exchanges the elements of two deques.

deque Class

A template class of sequence containers that arrange elements of a given type in a linear arrangement and, like vectors, allow fast random access to any element and efficient insertion and deletion at the back of the container.