specifying an array size

Question

charles 2023-3-8

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1924960-specifying-an-array-size

回答： Chunru 2023-3-8

采纳的回答： Chunru

clear

count=1

A =randi([1,9999],10,31)

[row,col]=size(A)

for i=1: row

for j =1:col

%%to check if this number appears and then store than index in another

%%array

if A(i,j)==4000

b=[i,j]

count = count+1;

%% I would like to have the count as the amount of rows, and two columns for i and j

b=[,count;,;]

end

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Answer 1

Chunru 2023-3-8

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1924960-specifying-an-array-size#answer_1188075

count=0;
b = [];
%A =randi([1,9999],10,31);  
A =randi([1,60],10,31);  
[row,col]=size(A);
for i=1: row
    for j =1:col
        %if A(i,j)==4000
        if A(i,j)==10
            count = count+1;
            b=[b; count i,j];
        end
    end
end
b
b = 7×3
     1     3     4
     2     5    21
     3     5    27
     4     6     2
     5     7    25
     6     9     6
     7     9    14