What happens if the target value is not present in the sorted array during a bin

Practice Questions

Q1
What happens if the target value is not present in the sorted array during a binary search?
  1. The search will return the index of the closest value
  2. The search will return -1
  3. The search will enter an infinite loop
  4. The search will throw an error

Questions & Step-by-Step Solutions

What happens if the target value is not present in the sorted array during a binary search?
  • Step 1: Start with a sorted array and a target value that you want to find.
  • Step 2: Set two pointers, one at the beginning of the array (left) and one at the end (right).
  • Step 3: Calculate the middle index of the array using the formula: middle = (left + right) / 2.
  • Step 4: Compare the value at the middle index with the target value.
  • Step 5: If the middle value is equal to the target, return the index of the middle value.
  • Step 6: If the middle value is less than the target, move the left pointer to middle + 1.
  • Step 7: If the middle value is greater than the target, move the right pointer to middle - 1.
  • Step 8: Repeat steps 3 to 7 until the left pointer is greater than the right pointer.
  • Step 9: If the target value is not found after the loop ends, return -1 or a similar indicator of absence.
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