Class Solution

  • All Implemented Interfaces:

    
    public final class Solution
    
                        

    1787 - Make the XOR of All Segments Equal to Zero.

    Hard

    You are given an array nums and an integer k. The XOR of a segment [left, right] where left <= right is the XOR of all the elements with indices between left and right, inclusive: nums[left] XOR nums[left+1] XOR ... XOR nums[right].

    Return the minimum number of elements to change in the array such that the XOR of all segments of size k is equal to zero.

    Example 1:

    Input: nums = 1,2,0,3,0, k = 1

    Output: 3

    Explanation: Modify the array from **1** , **2** ,0, **3** ,0 to from **0** , **0** ,0, **0** ,0.

    Example 2:

    Input: nums = 3,4,5,2,1,7,3,4,7, k = 3

    Output: 3

    Explanation: Modify the array from 3,4, **5** , **2** , **1** ,7,3,4,7 to 3,4, **7** , **3** , **4** ,7,3,4,7.

    Example 3:

    Input: nums = 1,2,4,1,2,5,1,2,6, k = 3

    Output: 3

    Explanation: Modify the array from 1,2, **4, **1,2, **5** ,1,2, **6** to 1,2, **3** ,1,2, **3** ,1,2, **3** .

    Constraints:

    • 1 <= k <= nums.length <= 2000

    • <code>0 <= numsi< 2<sup>10</sup></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 Integer minChanges(IntArray nums, Integer k)
      • Methods inherited from class java.lang.Object

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