MATLAB: How to select two number randomly from an array and perform swapping between these two number

the size of array is about 50.

for example in array A=[1 2 3 5 6 9 10] two number selected randomly are 3 and 6 so after swapping array be like A=[1 2 6 5 3 9 10].

Best Answer

    A=[1 2 3 5 6 9 10] ;
    %%select two numbers and swap
%%using randsample
    idx = randsample(1:length(A),2) ;
    B = A ;
    B(fliplr(idx)) = A(idx) ;
    %%using randperm
  idx = randperm(length(A),2) ;
  B = A ;
  B(fliplr(idx)) = A(idx) ;
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