In a binary search implementation, what is the role of the 'low' and 'high' vari

Practice Questions

Q1
In a binary search implementation, what is the role of the 'low' and 'high' variables?
  1. To store the size of the array
  2. To track the current search range
  3. To count the number of iterations
  4. To store the target value

Questions & Step-by-Step Solutions

In a binary search implementation, what is the role of the 'low' and 'high' variables?
  • Step 1: Understand that a binary search is used to find a specific value in a sorted array.
  • Step 2: The 'low' variable represents the starting index of the current range of the array being searched.
  • Step 3: The 'high' variable represents the ending index of the current range of the array being searched.
  • Step 4: Initially, 'low' is set to the first index (0) and 'high' is set to the last index (length of array - 1).
  • Step 5: During each step of the search, the middle index is calculated using 'low' and 'high'.
  • Step 6: If the value at the middle index is not the target, 'low' or 'high' is adjusted to narrow down the search range.
  • Step 7: This process continues until the target value is found or the range is empty.
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