how to rotate integer vector from right to left and vis versa
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Write afunction called rotleft that will receiveone row vector as an argument (you mayassume that it is a row vector with a length of at least two) and willreturn another vector, whichconsists of the input vector rotatedto the left—e.g., all values shift over one element, and the first element iswrapped around to theend. For example,
>> rotleft([1 3 4]) ans =
3 4 1
could anyone help please ?
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DGM
2021 年 11 月 7 日
Something like this
shamount = 1; % amount to shift left (negative to shift right)
A = 1:5 % test vector
B = circshift(A,[0 -shamount]) % using circshift
C = A(mod((1:numel(A))+shamount-1,numel(A))+1) % using basic indexing
2 件のコメント
DGM
2021 年 11 月 8 日
Pass parameters as input arguments instead of pestering the user for interactive inputs.
The result is assigned to a variable with the same name as the function instead of the output argument.
The rotation method doesn't do what you think it does. Consider:
vec = [12 15 20 17]
B = [20:-1:vec] % just creates a linear vector from 20 to vec(1)
I already mentioned ways to do this.
myvecrot(1:10,2)
myvecrot(1:10,-2)
function outvec = myvecrot(invec,k)
outvec = invec(mod((1:numel(invec))+k-1,numel(invec))+1);
end
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