Challenge: Implement Two Stacks Using One Array
Try to solve the Implement Two Stacks Using One Array problem.
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Statement
Design a data structure TwoStacks, that represents two stacks using a single array, where both stacks share the same array for storing elements.
The following operations must be supported:
push1(value): Takes an integervalueand inserts it into the first stack.push2(value): Takes an integervalueand inserts it into the second stack.pop1(): Removes the top element from the first stack and returns it.pop2(): Removes the top element from the second stack and returns it.
Note: Perform all operations in-place without resizing the underlying list, maintaining a fixed size throughout.
Constraints:
arr.lengthvalue,value2
Examples
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