Knowing What to Track

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Questions and Answers

Which of the following problems can be solved using the Knowing What to Track pattern?

  • Finding the maximum value in an array
  • Checking if two strings are anagrams (correct)
  • Finding the sum of two arrays
  • Sorting an array in ascending order

What is the time complexity of the Knowing What to Track pattern?

  • O(1) (correct)
  • O(n)
  • O(log n)
  • O(n^2)

Which data structures can be used to store the frequency count of the given data in the Knowing What to Track pattern?

  • Linked lists
  • Hashmaps only
  • Arrays or variables (correct)
  • Arrays only

What is the key advantage of using hashmaps in the Knowing What to Track pattern?

<p>Constant time search and retrieval of data (A)</p> Signup and view all the answers

Which of the following problems cannot be solved using the Knowing What to Track pattern?

<p>Finding the median of an array (B)</p> Signup and view all the answers

What is the main benefit of the Knowing What to Track pattern?

<p>Avoidance of high time complexity (A)</p> Signup and view all the answers

Which of the following is an example of a problem that can be solved using the Knowing What to Track pattern?

<p>Checking if an array contains duplicate elements (B)</p> Signup and view all the answers

What is the purpose of the Knowing What to Track pattern?

<p>To identify key numeric properties in data (B)</p> Signup and view all the answers

Which of the following is a real-world application of the Knowing What to Track pattern?

<p>Analyzing customer buying patterns (C)</p> Signup and view all the answers

What is the time complexity of the search and retrieval operations in a hashmap?

<p>O(1) (B)</p> Signup and view all the answers

Which one of these problems can be solved using the 'knowing what to track' pattern?

<p>Given a half-filled board, fill the empty cells to solve the Sudoku puzzle. (C)</p> Signup and view all the answers

Which one of these problems cannot be solved using the 'knowing what to track' pattern?

<p>Given a string, check if any of its permutations can form a valid palindrome. (B)</p> Signup and view all the answers

Which of these problems falls under the 'knowing what to track' pattern?

<p>Given a string, count the substrings that have all of the vowels. (C)</p> Signup and view all the answers

Which of these problems does not fall under the 'knowing what to track' pattern?

<p>Check if a given string is a valid palindrome. (A)</p> Signup and view all the answers

Which problem requires the 'knowing what to track' pattern to solve efficiently?

<p>Given a half-filled board, fill the empty cells to solve the Sudoku puzzle. (C)</p> Signup and view all the answers

Which problem does not require the 'knowing what to track' pattern to solve efficiently?

<p>Check if a given string is a valid palindrome. (A)</p> Signup and view all the answers

Which problem falls under the 'knowing what to track' pattern and requires a True / False response?

<p>Given a string, check if any of its permutations can form a valid palindrome. (C)</p> Signup and view all the answers

Which problem falls under the 'knowing what to track' pattern and does not require a True / False response?

<p>Given a string, count the substrings that have all of the vowels. (D)</p> Signup and view all the answers

Which problem does not fall under the 'knowing what to track' pattern and requires a True / False response?

<p>Check if a given string is a valid palindrome. (D)</p> Signup and view all the answers

Which problem does not fall under the 'knowing what to track' pattern and does not require a True / False response?

<p>Given a half-filled board, fill the empty cells to solve the Sudoku puzzle. (D)</p> Signup and view all the answers

Which problem requires the 'knowing what to track' pattern and a True / False response?

<p>Given a string, check if any of its permutations can form a valid palindrome. (D)</p> Signup and view all the answers

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