How do you detect duplicate values within a random array?
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Aaron Zambiasi
el 31 de Mzo. de 2020
Editada: Aaron Zambiasi
el 31 de Mzo. de 2020
Write a program to find if a vector of random generated integers contains any duplicate element. Return true if any value appears at least twice in the said vector and return false if every element is distinct.
I simply have no idea how to implement this. I believe this problem requires a for loop and a series of if statements.
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KSSV
el 31 de Mzo. de 2020
If you want to use inbuilt functions......you can use unique. Read about it. Let A be your array.
B = unique(A) ;
if length(A)==length(B)
fprintf('No elements repeated')
else
fprintf('Elements repeated')
end
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Image Analyst
el 31 de Mzo. de 2020
Aaron, not true. The lengths are different if there are repeats because unique() throws out the repeats and sorts the values. Just look
A = [1, 2, 3, 4]
B = unique(A)
fprintf('length(A) = %d. length(B) = %d.\n', length(A), length(B));
A = [1, 2, 2, 2, 9, 5]
B = unique(A)
fprintf('length(A) = %d. length(B) = %d.\n', length(A), length(B));
A =
1 2 3 4
B =
1 2 3 4
length(A) = 4. length(B) = 4.
A =
1 2 2 2 9 5
B =
1 2 5 9
length(A) = 6. length(B) = 4.
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