Question

Modify myIndexing.m so that the function returns indices of the array that can be used like this: [ asc , desc ] = myIndexing( someArray ); disp( someArray( desc ) ) to display the array in descending order. Do not use MATLAB’s sort Function!!!!!

function [ascending,descending]=myIndexing(inputArray)

%insert code here

end

Answer 1

MATLAB CODE:

function [ascending, descending] = myIndexing(inputArray)

temp = inputArray;

% Indices of the array in ascending order

ascending = 1:length(inputArray);

% Sort input array in ascending order

for i = 1:(length(temp) - 1)

for j = 1:(length(temp) - 1)

if temp(j) > temp(j + 1)

% Swap adjacent elements

x = temp(j);

temp(j) = temp(j + 1);

temp(j + 1) = x;

% Swap adjacent elements of ascending

x = ascending(j);

ascending(j) = ascending(j + 1);

ascending(j + 1) = x;

end

end

end

% Descending will be reverse of ascending

descending = ascending(length(ascending):-1:1);

end

SAMPLE OUTPUT:

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