What is a real-world application of binary search?

Practice Questions

Q1
What is a real-world application of binary search?
  1. Finding a word in a dictionary
  2. Sorting a list of names
  3. Inserting data into a database
  4. Traversing a tree structure

Questions & Step-by-Step Solutions

What is a real-world application of binary search?
  • Step 1: Understand that a dictionary is a book that lists words in alphabetical order.
  • Step 2: When you want to find a specific word, you don't start from the beginning and check each word one by one.
  • Step 3: Instead, you open the dictionary to the middle page to see if the word is there.
  • Step 4: If the word you are looking for comes before the middle word, you only check the first half of the dictionary.
  • Step 5: If the word comes after the middle word, you only check the second half of the dictionary.
  • Step 6: Repeat this process of checking the middle until you find the word or determine it is not in the dictionary.
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