how to delete a row if a number is repeated 4 times or 3 times
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i have a matrix M=65005*5
there are certain rows in which number is repeated twice, thrice or four times. i want to delete that row from matrix.
for example
M=[1 1 1 1 16; 2 5 6 4 16; 2 2 2 6 5];
if 4 (because there is 4 repested number in 1st row) is written than 1st row will be deleted
when 3 (there is 3 repeated number in 3rd row) is written than 3rd row will be deleted.
Thanks in advance
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Respuestas (1)
Mili Goyal
el 1 de Jul. de 2021
Checking for the repeating entries in every row and then deleting itcan be one of the straightforward approach. Following is the code for the same.
%% Code
i = 1;
while i <= size(M,1)
if(length(M(i, :)) ~= length(unique(M(i, :)))) % checking for the repeated entry.
M(i, :) = []; % deleting the row.
else
i = i+1;
end
end
%%
The above will return M = [2 5 6 4 16] as the ans for the example M given in the question.
4 comentarios
Mili Goyal
el 7 de Jul. de 2021
Did you try storing the number of occurances of repeating numbers for all the rows in an array and then iterating through them depending upon the input and deleting rows?
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