Queues are abstract data structures that are similar to Stacks. A queue, unlike a stack, is open at both ends. One end is always used to input data (enqueue), whereas the other end is always used to delete data (dequeue). The queue employs the First-In-First-Out (FIFO) mechanism, which means that the data item stored first …
The way to write arithmetic expression is known as a notation. An arithmetic expression can be written in three different but equivalent notations, i.e., without changing the essence or output of an expression. These notations are − Infix Notation Prefix (Polish) Notation Postfix (Reverse-Polish) Notation Infix Notation Infix notation is used to write expressions, such as …
A stack is an Abstract Data Type (ADT) that is found in almost all computer languages. It is called a stack because it performs like real-world stacking, such as a deck of cards or perhaps a pile of dishes. A real-world stack can only perform operations at one end. For instance, we can only place …