Searching — Practice Quiz
Haryana Board · Class 12 · Computer Science
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Quick Quiz: Searching
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What is the main purpose of searching in computer science?
In linear search, elements are compared:
What is the minimum number of comparisons required in linear search?
Binary search can only be applied to:
Sample Questions
Which of the following are alternative names for linear search?
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Sequential search, Serial search
Linear search compares each element one by one in the order they appear in the list, beginning from the first element. Because of this, it is also called sequential search or serial search. The other options are not names used for this method.
In binary search, the middle element is calculated using:
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(first + last) // 2
The middle position is calculated using floor division (//), which gives an integer result. This ensures we get a valid index position in the list.
What happens in binary search when the key is smaller than the middle element?
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Search in the first half
If the key is smaller than the middle element, it can only be found in the first half of the sorted list (if present). We ignore the second half and continue searching in the first half.
Which search technique requires the minimum time for searching regardless of list size?
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Hashing
Hashing can locate a key in just one step using a hash function to calculate the index directly. The time required is constant and independent of the list size.
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