Programming assignment 9 Write a function sortWords(array) that does the following: 1. Takes as an input...

Programming assignment 9
Write a function sortWords(array) that does the following:
1. Takes as an input a cell array of strings consisting of letters only. (1 pts)
2. Returns a cell array with all the strings in alphabetical order. (5 pts)
3. The function should ignore whether letters are lower case or upper case. (2 pts)
Test your function with the following: (2 pts)
>> sorted=sortWords({’Hello’,’hell’,’abc’,’aa’,’aza’,’aab’,’AaBb’,’a’}) sorted =
’a’ ’aa’ ’aab’ ’AaBb’ ’abc’ ’aza’ ’hell’ ’Hello’
Note: Your function may not contain any built-in MATLAB function(s) that deal with sorting or ﬁnding minimum values. If your function does use these built-in functions, up to 8 points may be deducted from your total.
Hint: Use the program sharkSort(vec) as a starting point and amend it so that it works for this programming assignment. For example your function could start as follows (ﬁll in the blanks as necessary):
function sortedarray=sortWords(array) sortedarray={}; while ~isempty(array) [m,pos]=findSmallest(array); array(pos)=[]; sortedarray=[sortedarray m]; end
function [m,pos]=findSmallest(array) m = ...; pos=1; for i=2:length(array) if isLessWord(...,m) m = ...; pos= i; end end
function less=isLessWord(wordA,wordB) worda=lower(wordA); wordb=lower(wordB);

Expert Solution

function sortedarray = sortWords(array)
sortedarray = {};
while ~isempty(array)
[m,pos] = findSmallest(array);
array(pos) = [];
sortedarray = [sortedarray m];
end
end

function [m,pos] = findSmallest(array)
m = array{1}; % set m to string at position 1 as the smallest string
pos = 1; % index of the smallest string position
% loop over the array and find the smallest string in the array
for i=2:length(array)
if isLessWord(array{i},m)
m = array{i}; % if array at ith position < m , then set m = string at ith position
pos = i;
end
end
end

function less = isLessWord(wordA,wordB)
% function to return 1 if wordA < wordB else 0
worda = lower(wordA);
wordb = lower(wordB);
less = -1;

if(length(worda) == length(wordb))
word_length = length(worda);
elseif(length(worda) < length(wordb))
word_length = length(worda);
else
word_length = length(wordb);
end

for i=1:word_length
if(worda(i) < wordb(i))
less = 1;
break;
elseif(worda(i) > wordb(i))
less = 0;
break;
end
end

if(less == -1)
if(length(worda) > word_length)
less = 0;
else
less = 1;
end
end
end

% end of script

Output:

venereology answered 2 months ago

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