Finding index of a found string inside a string array

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User name
User name 2019-11-7
评论： Rena Berman 2023-3-9
Hi there i'm trying to code a polybius square cipher in matlab. I am trying to find the index if the current character in the alphabet string which is a 5*5 string array.
grid = ["A", "B", "C", "D", "E";
"F", "G", "H", "I/J", "K";
"L", "M", "N", "O", "P";
"Q", "R", "S", "T", "U";
"V", "W", "X", "Y", "Z"
];
characterindex = strfind(grid, "letter");
I need character index to return an index rather than 5*5 cell array so i can find the corrisponding index.
Help would be hugely appreciated,
many thanks
  2 个评论
Stephen23
Stephen23 2023-2-21
编辑：Stephen23 2023-2-21
Original question by Rahim Neal Yakoob retrieved from Google Cache:
https://web.archive.org/web/20230221164217/https://webcache.googleusercontent.com/search?q=cache:PeguR75RXb8J:https://www.mathworks.com/matlabcentral/answers/489630-finding-index-of-a-found-string-inside-a-string-array
https://web.archive.org/web/20230221164347/https://www.mathworks.com/matlabcentral/answers/489630-finding-index-of-a-found-string-inside-a-string-array
Finding index of a found string inside a string array
Hi there i'm trying to code a polybius square cipher in matlab. I am trying to find the index if the current character in the alphabet string which is a 5*5 string array.
grid = ["A", "B", "C", "D", "E";
"F", "G", "H", "I/J", "K";
"L", "M", "N", "O", "P";
"Q", "R", "S", "T", "U";
"V", "W", "X", "Y", "Z"
];
characterindex = strfind(grid, "letter");
I need character index to return an index rather than 5*5 cell array so i can find the corrisponding index.
Help would be hugely appreciated,
many thanks

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回答（1 个）

Walter Roberson
Walter Roberson 2019-11-7
[row, col] = find(contains(grid, "letter"));
Caution: this would work even for "/" because that is present in your "I/J" string. The code makes no attempt to be smart about what is stored at the locations.

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