Answer
See the explanation
Work Step by Step
To reverse two adjacent entries on one of the stacks using the given constraints, you can follow the following algorithm:
1. Let's assume the three stacks are named Stack A, Stack B, and Stack C.
2. Initially, the entries are arranged in the following manner:
- Stack A: [a, b, c, d, e, f, g, ...]
- Stack B: []
- Stack C: []
3. Move the entries from Stack A to Stack B until you reach the two adjacent entries you want to reverse. Keep track of the entries moved in a temporary stack, let's call it Temp Stack.
4. Once you reach the two adjacent entries, move them to Stack C while maintaining their order. Now, the entries in Stack C will be reversed.
5. Move the remaining entries from Temp Stack back to Stack A, maintaining their original order.
6. Finally, move the entries from Stack C back to Stack A, reversing them again to restore the original order.
7. The final arrangement of the stacks will be:
- Stack A: [a, b, c, d, e, f, g, ...] (with the two adjacent entries reversed)
- Stack B: []
- Stack C: []
By following this algorithm, you can reverse two adjacent entries on one of the stacks while adhering to the given constraints.
