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How to remove second digit of first a column

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Vishal Sharma
Vishal Sharma 2017-1-24
编辑： James Tursa 2017-1-24
I have one matrix A = [21 2; 34 3; 13 4] I want to remove first digit of first column, so that result shall be A= [1 2;4 3; 3 4]
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Jan
Jan 2017-1-24
编辑：Jan 2017-1-24
What do you want for the inputs 123 and -2? Do you really want to remove the first digit, or to obtain the second digit, or to keep the digit smaller than 10?

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回答（2 个）

James Tursa
James Tursa 2017-1-24
编辑：James Tursa 2017-1-24
To retain the 1st digit for the numbers shown:
result = [floor(A(:,1)/10) A(:,2)];
To retain the 2nd digit for the numbers shown:
result = [mod(A(:,1),10) A(:,2)];
If numbers can be > 99 or negative, then you will have to let us know what you want for output.
Stephen23
Stephen23 2017-1-24
>> rem(A,10)
ans =
1 2
4 3
3 4

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