Edexcel D1 2001 January — Question 2

Exam BoardEdexcel
ModuleD1 (Decision Mathematics 1)
Year2001
SessionJanuary
TopicFixed Point Iteration

2. (a) Use the binary search algorithm to locate the name HUSSAIN in the following alphabetical list. Explain each step of the algorithm.
  1. ALLEN
  2. BALL
  3. COOPER
  4. EVANS
  5. HUSSAIN
  6. JONES
  7. MICHAEL
  8. PATEL
  9. RICHARDS
  10. TINDALL
  11. WU
    (b) State the maximum number of comparisons that need to be made to locate a name in an alphabetical list of 11 names.
    (1 mark)
\begin{figure}[h]
\includegraphics[alt={},max width=\textwidth]{c1b75596-bbab-4278-8503-7cfbea0bc5f1-3_816_1298_343_391} \captionsetup{labelformat=empty} \caption{Fig. 1}
\end{figure} (a) Using an appropriate algorithm, obtain a suitable route starting and finishing at \(A\).
(b) Calculate the total length of this route.