Index-Aware Page Navigation | Dataford Interview Questions

Implement pagination with the ability to navigate forward and backward, keeping track of the indices of the first and last records on the current page.

Implement paginate(records, page_size, actions). Return the initial page followed by a snapshot after each action. Each snapshot contains records, first_index, and last_index; use null indices when records is empty. Actions are the strings "next" and "prev", and navigation must remain within the available pages.

Constraints

0 <= records.length <= 1000
1 <= page_size <= 1000
0 <= actions.length <= 1000
Each action is either "next" or "prev"
Record values may be any JSON-compatible values

Function Signature

def paginate(records, page_size, actions):

Your question is Index-Aware Page Navigation. Start with the requirements in the Question tab.

Run and submit as often as you like. When you're ready, talk me through your approach or go straight to the code.

Problem

Implement pagination with the ability to navigate forward and backward, keeping track of the indices of the first and last records on the current page.

Constraints

0 <= records.length <= 1000
1 <= page_size <= 1000
0 <= actions.length <= 1000
Each action is either "next" or "prev"
Record values may be any JSON-compatible values

Function Signature

def paginate(records, page_size, actions):

Your question is Index-Aware Page Navigation. Start with the requirements in the Question tab.

Run and submit as often as you like. When you're ready, talk me through your approach or go straight to the code.