how to do for loop 2nd level?

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Arif
Arif 2024-3-11
评论： Arif 2024-3-16
hi guys, i want to do :
XY :
AA
AB
AC
AD
..
QQ
but this error happened.
  1 个评论
Arif
Arif 2024-3-11
Here is my code
clc
clear
beam = {'A';'B';'C';'D';'E';'F';'G';'H';'I';'J';'K';'L';'M';'N';'O';'P';'Q'}
column = {'A';'B';'C';'D';'E';'F';'G';'H';'I';'J';'K';'L';'M';'N';'O';'P';'Q'}
for i = 1 : length(beam)
x(i) = string(beam(i))
for j = 1 : length(column)
y(j) = string(column(j))
xy(i) = append(x(i),y(j))
end

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采纳的回答

Rik
Rik 2024-3-11
编辑：Rik 2024-3-11
Ran in:
Your code can be optimized, but here are the minimal changes.
beam = {'A';'B';'C';'D';'E';'F';'G';'H';'I';'J';'K';'L';'M';'N';'O';'P';'Q'};
column = {'A';'B';'C';'D';'E';'F';'G';'H';'I';'J';'K';'L';'M';'N';'O';'P';'Q'};
xy=repmat("",numel(beam)*numel(column),1);
k=0;
for i = 1 : numel(beam)
x = string(beam(i));
for j = 1 : numel(column)
y = string(column(j));
k=k+1;
xy(k) = x+y;
end
end
xy
xy = 289×1 string array
"AA" "AB" "AC" "AD" "AE" "AF" "AG" "AH" "AI" "AJ" "AK" "AL" "AM" "AN" "AO" "AP" "AQ" "BA" "BB" "BC" "BD" "BE" "BF" "BG" "BH" "BI" "BJ" "BK" "BL" "BM"
Now for the more compact version (using implicit expansion and transposing with .'):
beam = {'A';'B';'C';'D';'E';'F';'G';'H';'I';'J';'K';'L';'M';'N';'O';'P';'Q'};
column = {'A';'B';'C';'D';'E';'F';'G';'H';'I';'J';'K';'L';'M';'N';'O';'P';'Q'};
xy = string(beam).'+string(column);
xy = xy(:);
xy
xy = 289×1 string array
"AA" "AB" "AC" "AD" "AE" "AF" "AG" "AH" "AI" "AJ" "AK" "AL" "AM" "AN" "AO" "AP" "AQ" "BA" "BB" "BC" "BD" "BE" "BF" "BG" "BH" "BI" "BJ" "BK" "BL" "BM"
Or perhaps even this:
beam = string(num2cell('A':'Q'));
column = string(num2cell('A':'Q'));
xy = reshape(beam+column.',[],1);
xy
xy = 289×1 string array
"AA" "AB" "AC" "AD" "AE" "AF" "AG" "AH" "AI" "AJ" "AK" "AL" "AM" "AN" "AO" "AP" "AQ" "BA" "BB" "BC" "BD" "BE" "BF" "BG" "BH" "BI" "BJ" "BK" "BL" "BM"

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