Choosse randomly number of elements from a vector 1.0

function [out]=random2(ini,fin,num)% Choosse randomly a number (num) of elements from a vector [ini:fin]% Randomly change the position of the vector. in pairs of twos%% Imput:% ini: Beginning of the vector% fin: End of the vector% nun: Number of elements to choose from the range of vector [ini:fin]%% Output% output vector%% Example%% [out]=random2(-20,20,10)%% out =% -1 5 18 -3 1 -17 15 7 3 -6%% [out]=random2(5,50,10)%% out =% 29 19 20 47 43 18 14 48 23 28vr=ini:fin; % Reference Vectorlon=fin-ini; % variation or range of the vectorfor nv=1:5*length(vr) % vector length. p1=ceil(lon*rand); % randomly chooses position to move. p2=ceil(lon*rand); % randomly selects the position where it is going to move. tp=vr(p1); % temporal position. vr(p1)=vr(p2); % Change inicial by end position. vr(p2)=tp; % Change end by inicial position.end out=vr(1:num); % output vector

Requirements:	No special requirements
Platforms:	Matlab
Keyword:	Chooses,  Dceillonrand,  Dinifin,  Length,  Lengthvr,  Lon Dfinini,  Reference,  Variation,  Vector
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