function pop=my_sga_initpop(popsize,n,var_num,up_range,down_range) 
%函數說明
%入口參數：種群大小popsie,個體的定義域（絕對定義域）n
%出口參數：正整數矩陣（2*popsie）
%功能說明：由randperm隨機數產生函數產生n個數字的數列，取其前popsie個，形成初始種群
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%調試語句
% popsize=10;
% var_num = 2;
% up_range = 10;
% down_range = -10;
% n=3095;
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% pop1_init=randperm(n); %產生1到32的整數
% pop2_init=randperm(n);
% pop(1,:)=pop1_init(1:popsize);  %將前幾個整數作為初始群體
% pop(2,:)=pop2_init(1:popsize);;  %將前幾個整數作為初始群體
% 
% pop;

% for i = 1:var_num
%     popi_init = randperm(n);
%     pop(i,:) = popi_init(1:popsize);
range = up_range - down_range;
popinit = rand(var_num,popsize);
pop = popinit.*range + down_range;
% end

% pop;