Problem 793. Combinations without using nchoosek
You have to generate a matrix with all possible combinations of n elements taken 2 at a time, without using nchoosek(1:n,2) :
Examples
if n = 3
output =
1 2
1 3
2 3if n = 5
output =
1 2
1 3
1 4
1 5
2 3
2 4
2 5
3 4
3 5
4 5Good luck!!
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