How to remove quotation marks from each element of my array
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Hi Guys,
I have made a 10x10 gameboard with the first row and column containing the numbers from 0 to 9.
When I display the gameboard, each element has quotation marks around it which I would like to remove. Note that the gameboard isn't correctly displayed when using ' ' instead of " ".
Any help is much appreciated.
%Initialising array and parameters
gameboard = [];
rows = 10;
cols = 10;
%Populating with nested loop
for r = [1:rows]
gameboardRow = [];
for c = [1:cols]
hypens = "-";
gameboardRow = [gameboardRow hypens];
end
gameboard = [gameboard; gameboardRow];
end
gameboard(1,:) = [0:9];
gameboard(:, 1) = [0:9];
disp(gameboard);
"0" "1" "2" "3" "4" "5" "6" "7" "8" "9"
"1" "-" "-" "-" "-" "-" "-" "-" "-" "-"
"2" "-" "-" "-" "-" "-" "-" "-" "-" "-"
"3" "-" "-" "-" "-" "-" "-" "-" "-" "-"
"4" "-" "-" "-" "-" "-" "-" "-" "-" "-"
"5" "-" "-" "-" "-" "-" "-" "-" "-" "-"
"6" "-" "-" "-" "-" "-" "-" "-" "-" "-"
"7" "-" "-" "-" "-" "-" "-" "-" "-" "-"
"8" "-" "-" "-" "-" "-" "-" "-" "-" "-"
"9" "-" "-" "-" "-" "-" "-" "-" "-" "-"
3 Comments
Stephen23
on 1 Sep 2021
for r = [1:rows]
% ^ ^ superflouus, get rid of them.
Most of your code consists of inefficient nested loops that simply generate a string matrix of the hyphen character: expanding arrays inside loops should be avoided. Rather than using nested loops simply use much simpler REPMAT:
nrows = 5;
ncols = 5;
M = repmat("-",nrows,ncols)
Assuming that you require the matrix to be string type, then most likely the answer to your question is to write your own display routine using FPRINTF. Doing so will give you much more control over how it looks when displayed.
Accepted Answer
Chunru
on 1 Sep 2021
gameboard = [];
rows = 10;
cols = 10;
%Populating with nested loop
gameboard = repmat('-', 10, 10);
gameboard(1, :) = ('0':'9');
gameboard(:, 1) = ('0':'9');
disp(gameboard);
% Place space along rows
gameboard = repmat('- ', 10, 10);
gameboard(1, 1:2:end) = ('0':'9');
gameboard(:, 1) = ('0':'9');
disp(gameboard);
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