dynamic array hackerrank solution python
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Certainly! Below is an informative tutorial about solving a dynamic array problem on HackerRank using Python, along with a code example.
You are given a sequence of n queries, where each query is in the following format:
You need to implement a dynamic array to handle these queries efficiently.
To solve this problem, we can use a list of lists (2D list) as our dynamic array. The outer list represents the "sequences," and each inner list represents a dynamic array at that sequence index. We also need to keep track of the lastAnswer variable.
We initialize an empty list of lists called sequences to represent our dynamic array, and lastAnswer is set to 0 initially.
We iterate through each query and determine whether it's a Query 1 or Query 2.
For Query 1, we calculate the sequence index using (x ^ lastAnswer) % n and append y to the corresponding dynamic array.
For Query 2, we again calculate the sequence index and find the element index using y % len(sequences[seq_index]). We update lastAnswer and append it to the results list.
Finally, we return the results list containing the answers to Query 2.
This dynamic array implementation efficiently handles the given queries and can be used as a solution for the HackerRank problem.
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