t3review1 - Review questions for Prelim 3 1 Write the...

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Review questions for Prelim 3 1. Write the following function: function [len, ind] = longest(C) % Find the longest string(s) in cell array C. % C is an n-by-1 cell array of strings, n>=1. % len is the length of the longest string in C. % ind is a vector, possibly of length one, containing the index number(s) of % the strings with length len 2. Given the following cell arrays of strings: suits= {’Hearts’, ’Clubs’, ’Spades’, ’Diamonds’}; ranks= {’Ace’, ’2’, ’3’, ’4’, ’5’, ’6’, ’7’, ’8’, ’9’, ’10’, ’Jack’, ’Queen’, ’King’}; write a code fragment to Create a structure array of cards such that each structure has two fields,
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Unformatted text preview: suit and rank , that store the appropriate strings. The structure array should be of length 52. • Do a perfect shuffle of the cards. 3. Assume that each structure in structure array Pts has two Felds, x and y . Write a code fragment to sort the structure array Pts so that the structures are in the order of increasing distance from (0,0). You can use built-in function sort : [y, idx]= sort(x) where x is an n-vector of numbers , y is x sorted in ascending order, and idx is an n-vector of indices such that y(i) = x(idx(i)) . (Review your notes from Lecture 19 if necessary.) 4. Review the project questions, lecture examples, and section exercises! 1...
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  • Summer '07
  • FAN/VANLOAN
  • Array, Playing card, len, built-in function, structure array

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