Stack (abstract data type)
In computer science, a stack is an abstract data type that serves as a collection of elements, with two principal operations: push, which adds an element to the collection, and pop, which removes the most recently added element that was not yet removed. The order in which elements come off a stack gives rise to its alternative name, LIFO (for last in, first out). Additionally, a peek operation may give access to the top without modifying the stack.
The name "stack" for this type of structure comes from the analogy to a set of physical items stacked on top of each other, which makes it easy to take an item of the top of the stack, while getting to an item deeper in the stack may require taking off multiple other items first.
Considered as a linear data structure, or more abstractly a sequential collection, the push and pop operations occur only at one end of the structure, referred to as the top of the stack. This makes it possible to implement a stack as a singly linked list and a pointer to the top element.
LIFO
LIFO, an acronym for "Last In First Out", may refer to:
LIFO may also refer to:
See also
LIFO (magazine)
LiFO is a free magazine published and distributed for free every Thursday in Athens, Greece. It contains articles with general socio-political content, articles on the matters of the city of Athens, interviews, reportages and information about events in Athens as well as with articles about cinema, theatre and books. The creator of the magazine is Stathis Tsagkarousianos.
The magazine often organizes free admission parties with live concerts. The magazine organized the live reunion concert of the Greek electronic music band Stereo Nova at the LIFO Party on December 5, 2008.
www.lifo.gr is one of Greece's leading content websites with more than 4,8 million unique visitors per month and it is amongst the top 5 Greek websites. It covers news, opinion articles, and current events from Greece.
External links
FIFO and LIFO accounting
FIFO and LIFO methods are accounting techniques used in managing inventory and financial matters involving the amount of money a company has tied up within inventory of produced goods, raw materials, parts, components, or feed stocks. These methods are used to manage assumptions of cost flows related to inventory, stock repurchases (if purchased at different prices), and various other accounting purposes.
FIFO
"FIFO" stands for first-in, first-out, meaning that the oldest inventory items are recorded as sold first but do not necessarily mean that the exact oldest physical object has been tracked and sold. In other words, the cost associated with the inventory that was purchased first is the cost expensed first. With FIFO, the cost of inventory reported on the balance sheet represents the cost of the inventory most recently purchased.
Consider this example: Foo Co. had the following inventory at hand, in order of acquisition in November:
If Foo Co. sells 210 units during November. The company would expense the cost associated with the first 100 units at $50 and the remaining 110 units at $55. Under FIFO, the total cost of sales for November would be $11,050. The ending inventory would be calculated the following way:
Podcasts:
