How do you detect duplicate values within a random array?
94 Ansichten (letzte 30 Tage)
Ältere Kommentare anzeigen
Aaron Zambiasi
am 31 Mär. 2020
Bearbeitet: Aaron Zambiasi
am 31 Mär. 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.
0 Kommentare
Akzeptierte Antwort
KSSV
am 31 Mär. 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
5 Kommentare
Image Analyst
am 31 Mär. 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.
Weitere Antworten (0)
Siehe auch
Kategorien
Mehr zu Creating and Concatenating Matrices finden Sie in Help Center und File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!