Class Solution

  • All Implemented Interfaces:

    
    public final class Solution
    
                        

    3277 - Maximum XOR Score Subarray Queries\.

    Hard

    You are given an array nums of n integers, and a 2D integer array queries of size q, where <code>queriesi = l<sub>i</sub>, r<sub>i</sub></code>.

    For each query, you must find the maximum XOR score of any subarray of <code>numsl<sub>i</sub>..r<sub>i</sub></code>.

    The XOR score of an array a is found by repeatedly applying the following operations on a so that only one element remains, that is the score:

    • Simultaneously replace a[i] with a[i] XOR a[i + 1] for all indices i except the last one.

    • Remove the last element of a.

    Return an array answer of size q where answer[i] is the answer to query i.

    Example 1:

    Input: nums = 2,8,4,32,16,1, queries = \[\[0,2],1,4,0,5]

    Output: 12,60,60

    Explanation:

    In the first query, nums[0..2] has 6 subarrays [2], [8], [4], [2, 8], [8, 4], and [2, 8, 4] each with a respective XOR score of 2, 8, 4, 10, 12, and 6. The answer for the query is 12, the largest of all XOR scores.

    In the second query, the subarray of nums[1..4] with the largest XOR score is nums[1..4] with a score of 60.

    In the third query, the subarray of nums[0..5] with the largest XOR score is nums[1..4] with a score of 60.

    Example 2:

    Input: nums = 0,7,3,2,8,5,1, queries = \[\[0,3],1,5,2,4,2,6,5,6]

    Output: 7,14,11,14,5

    Explanation:

    Constraints:

    • 1 &lt;= n == nums.length &lt;= 2000

    • <code>0 <= numsi<= 2<sup>31</sup> - 1</code>

    • <code>1 <= q == queries.length <= 10<sup>5</sup></code>

    • queries[i].length == 2

    • <code>queriesi = l<sub>i</sub>, r<sub>i</sub></code>

    • <code>0 <= l<sub>i</sub><= r<sub>i</sub><= n - 1</code>

    • Nested Class Summary

      Nested Classes 
      Modifier and Type Class Description
    • Field Summary

      Fields 
      Modifier and Type Field Description
    • Constructor Summary

      Constructors 
      Constructor Description
      Solution()
    • Enum Constant Summary

      Enum Constants 
      Enum Constant Description
    • Method Summary

      Modifier and Type Method Description
      final IntArray maximumSubarrayXor(IntArray nums, Array<IntArray> queries)
      • Methods inherited from class java.lang.Object

        clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait