How to subtract a number from a previous one

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Tino
Tino 2019-4-18
评论： Tino 2019-4-18
given a set of number 1, 0.75, 0.50, 0.6
I want a code that could compute the following given the first value as 1
for instance the code will generate the following answers
n1 = 1
n2 = 0.75 - n1
n3 = 0.5 - n2
n4 = 0.6 - n3
Your answers will be greatly appreciated.
Thanks in advance

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采纳的回答

Andrei Bobrov
Andrei Bobrov 2019-4-18
编辑：Andrei Bobrov 2019-4-18
x = [1;.75;.5;.6];
n = filter(1,[1;1],x);
or
out = tril(toeplitz(x))*(-1).^(2:numel(x)+1).';
or
n = x;
for jj = 2:numel(x)
n(jj) = x(jj) - n(jj-1);
end

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