Counting consecutive negative numbers in an array
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Hello, I need to find how many times consecutive negative numbers are in the array. For example:
v = [11 2 3 -1 -2 1 -1 -1 -3 1 3 -1];
The answer must be: 3
Thank you
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Bruno Luong
2020-11-24
编辑：Bruno Luong
2020-11-24
length(strfind([false v<0],[0 1]))
or
sum(diff([false v<0])==1)
3 个评论
BN
2020-11-24
Bruno Luong
2020-11-24
编辑：Bruno Luong
2020-11-24
How do you get 2?
>> v= [11 2 3 -1 -2 1 -1 -1 -3 1 3 -1]
v =
11 2 3 -1 -2 1 -1 -1 -3 1 3 -1
>> length(strfind([false v<0],[0 1]))
ans =
3
>> sum(diff([false v<0])==1)
ans =
3
BN
2020-11-24
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