Stack implementation in java using array

• Stack is a linear data structure.
• A stack can be defined as an ordered list in which insertion and deletion are performed at one end which is called top.The element at top position is called top element.
• Insertion of element is called Push and deletion is called POP.
• Stack is LIFO data structure. LIFO means Last-in-first-out. Here, the element which is inserted or added last, is accessed first. 

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The basic operations are performed in the stack as mentioned below.