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Consider an array which stores a maximum of 100 elements. For case 1, the user inserts 1 element into an array. For case 2, the user inserts 100 elements into an array. What is the time complexity for both the cases?
  • a)
    O(1), O(n)
  • b)
    O(n), O(n)
  • c)
    O(n), O(1)
  • d)
    O(1), O(1)
Correct answer is option 'D'. Can you explain this answer?
Verified Answer
Consider an array which stores a maximum of 100 elements. For case 1, ...
To store 1 element, 100 memory spaces are required.
To store 2 elements, 100 memory spaces are required.
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To store n element, 100 memory spaces are required.
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Most Upvoted Answer
Consider an array which stores a maximum of 100 elements. For case 1, ...
Time Complexity for Case 1:
- In Case 1, the user inserts only 1 element into the array.
- The time complexity for inserting a single element into an array is constant, denoted by O(1).
- This is because regardless of the size of the array, inserting a single element requires a fixed number of operations, such as finding the position to insert and updating the array.
- Therefore, the time complexity for Case 1 is O(1).

Time Complexity for Case 2:
- In Case 2, the user inserts 100 elements into the array.
- The time complexity for inserting elements into an array depends on the number of elements being inserted.
- As the number of elements being inserted is constant (100), the time complexity can be considered as O(n), where n is the number of elements being inserted.
- This is because for each element being inserted, the algorithm needs to find the position and update the array, which takes a constant amount of time.
- Since the number of elements being inserted is constant, the time complexity does not depend on the size of the array and remains O(1).
- Therefore, the time complexity for Case 2 is also O(1).

Conclusion:
- In both Case 1 and Case 2, the time complexity is O(1).
- This means that regardless of the number of elements being inserted, the time taken to insert the elements into the array remains constant.
- The time complexity is not dependent on the size of the array, but rather on the number of elements being inserted.
- Therefore, the correct answer is option 'D' - O(1), O(1).
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