What is the worst-case time complexity of searching for an element in an unsorte

Practice Questions

Q1
What is the worst-case time complexity of searching for an element in an unsorted array?
  1. O(1)
  2. O(n)
  3. O(log n)
  4. O(n log n)

Questions & Step-by-Step Solutions

What is the worst-case time complexity of searching for an element in an unsorted array?
  • Step 1: Understand what an unsorted array is. An unsorted array is a collection of elements where the order does not matter.
  • Step 2: Know that searching means looking for a specific element in the array.
  • Step 3: In the worst-case scenario, the element you are looking for might be the last one in the array or it might not be there at all.
  • Step 4: To find the element, you would have to check each element one by one until you find it or reach the end of the array.
  • Step 5: If there are 'n' elements in the array, you may need to check all 'n' elements in the worst case.
  • Step 6: Therefore, the time it takes to search in the worst case is proportional to the number of elements, which is expressed as O(n).
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