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Solution: Implement Two Stacks Using One Array

Explore how to design a data structure that supports two stacks using a single fixed-size array. Understand the push and pop operations for both stacks with pointers at opposite ends, and analyze the time and space efficiency of this approach. This lesson helps you master stack implementation techniques vital for technical interviews.

Statement

Design a data structure TwoStacks, that represents two stacks using a single list, where both stacks share the same list for storing elements.

The following operations must be supported:

  • push1(value): Takes an integer value and inserts it into the first stack.

  • push2(value): Takes an integer value ...