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sunxiao(½ð±Ò+2):лл²ÎÓ룬»¶Ó­³£À´ 2010-02-20 14:02
sunxiao(½ð±Ò+3):¶¼¸øÄãÁË£¬·Ç³£¸ÐлÄãµÄ°ïÖú 2010-03-08 05:15
>> A=[2,3;4,5;6,5;2,1;1,3;3,2;1,4;4,5;6,2]

A =

     2     3
     4     5
     6     5
     2     1
     1     3
     3     2
     1     4
     4     5
     6     2

>> B=full(sparse(A(:,1),1,A(:,2)))

B =

     7
     4
     2
    10
     0
     7

>> n=length(B)

n =

     6

>> B=[[1:n]' B]

B =

     1     7
     2     4
     3     2
     4    10
     5     0
     6     7

>>
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