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Consider an array of integers where each element appears twice except for one element that appears only once. How can you efficiently find the element that appears only once using Binary Search?
  • a)
    Sort the array and find the element that occurs only once using Binary Search.
  • b)
    Use the XOR operation on all elements of the array.
  • c)
    Use a hash table to count the occurrences of each element.
  • d)
    None of the above.
Correct answer is option 'B'. Can you explain this answer?
Most Upvoted Answer
Consider an array of integers where each element appears twice except ...
XOR operation can be used to find the element that appears only once in an array where all other elements appear twice.
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Consider an array of integers where each element appears twice except for one element that appears only once. How can you efficiently find the element that appears only once using Binary Search?a)Sort the array and find the element that occurs only once using Binary Search.b)Use the XOR operation on all elements of the array.c)Use a hash table to count the occurrences of each element.d)None of the above.Correct answer is option 'B'. Can you explain this answer?
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