作业帮matlab 排列组合问题
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matlab 排列组合问题
从10个数（1到10）中选3个数.其中1和2不能同时出现,3和4不能同时出现
从10个数（1到10）中选3个数.其中1和2不能同时出现,3和4不能同时出现
%----如果楼主想获得个数,在结尾加一句 size(c,1)就好--------------
a = 1:10;
c = nchoosek(a,3); %10 numbers taken 3 at a time
rowIndex = [];
%--------find row index of including 1,2 or 3,4 simultaneously-----------
for i=1:size(c,1)
if size(find(c(i,:)==1|c(i,:)==2),2)==2|size(find(c(i,:)==3|c(i,:)==4),2)==2
rowIndex = [rowIndex,i];
end
end
%--------delete the correspond rows----------------------------
c(rowIndex,:)=[];
disp(c);
a = 1:10;
c = nchoosek(a,3); %10 numbers taken 3 at a time
rowIndex = [];
%--------find row index of including 1,2 or 3,4 simultaneously-----------
for i=1:size(c,1)
if size(find(c(i,:)==1|c(i,:)==2),2)==2|size(find(c(i,:)==3|c(i,:)==4),2)==2
rowIndex = [rowIndex,i];
end
end
%--------delete the correspond rows----------------------------
c(rowIndex,:)=[];
disp(c);