Understanding Binary Search Algorithm

What is the primary requirement for a binary search algorithm to function correctly?

• The data set must be accessed sequentially

• The data set must contain fewer than 100 items

• The data set must be of integer type

• The data set must be sorted

What does the binary search algorithm do if the item at the midpoint is the one being searched for?

• Sets the boolean flag 'found' to true

• Repeats the search in the first half

• Exits the program immediately

• Continues to search in the second half

How does the binary search algorithm reduce the search area?

• By removing items one by one

• By adding more items to the data set

• By dividing the list into two halves

• By shuffling the items randomly

What happens if the item at the midpoint is less than the item being searched for?

• The 'first' variable is reset to zero

• The search is terminated

• The 'first' variable is adjusted to midpoint + 1

• The 'last' variable is adjusted

What is the initial value of the 'found' variable when the binary search begins?

• Undefined

• True

• False

• Null

What is the purpose of adjusting the 'last' variable when the item at the midpoint is greater than the item being searched for?

• To skip to the end of the data set

• To narrow down the search area

• To expand the search area

• To reset the search

Which of the following is NOT a step in the binary search algorithm as described?

• Randomly selecting a new midpoint

• Adjusting the 'first' or 'last' index based on comparison

• Checking if the midpoint equals the search item

• Calculating the midpoint

What is the outcome when the binary search algorithm finds the item?

• The program outputs the position of the item

• The program deletes the item from the data set

• The program restarts the search

• The program exits without any output

How is the midpoint calculated in a binary search algorithm?

• Midpoint = (first + last) / 2

• Midpoint = (first + last) * 2

• Midpoint = (first - last) / 2

• Midpoint = (first * last) / 2

What should be adjusted if the item at the midpoint is less than the item being searched for?

• The 'last' variable is adjusted to midpoint - 1

• The 'first' variable is adjusted to midpoint + 1

• The 'last' variable is reset to zero

• No adjustments are made