Using nested loop to enter individual values in a matrix

Question

Wilbur 2023-3-7

0
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1924280-using-nested-loop-to-enter-individual-values-in-a-matrix

回答： Voss 2023-3-7

Hi, I am trying to use a nested loop to input values of a m x m matrix individually. However after populating the entire matrix it still asks me for one additional value!

How should I solve this problem?

% Inputs

% [A] = M x M matrix

close all, clear all, clc;

% Ask user for size of matrices where [A] = M x M

m = input('What is the value of M, where matrices [A] = m x m? ');

% Create matrices [A]

A = [];

x = 1; y = 1;

while y < m+1;

while x < m+1;

i = input('Matrix A - input value of row x column y: ');

A(y,x) = i;

x = x+1;

end

x = 1;

y = y+1;

j = input('Matrix A - input value of row y column x: ');

A(y, x) = j;

x = x+1;

end

A

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Answer 1

Voss 2023-3-7

0
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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1924280-using-nested-loop-to-enter-individual-values-in-a-matrix#answer_1186850

在 MATLAB Online 中打开

Basically, you don't need the second input(), after the inner while loop, at all.

close all, clear all, clc;
% Ask user for size of matrices where [A] = M x M
m = input('What is the value of m, where matrix [A] = m x m? ');
% Create matrices [A]
A = zeros(m,m);
y = 1;
while y < m+1
    x = 1;
    while x < m+1
        i = input(sprintf('Matrix A - input value of row %d column %d: ', y, x));
        A(y,x) = i;
        x = x+1;
    end
    y = y+1;
end
A