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Finding numChanges in array

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Olivia Gilliam
Olivia Gilliam on 16 Feb 2021
Edited: Daniel Pollard on 16 Feb 2021
i'm trying to write a code that calculates the number of changes in V. There should be 6. (V = [1, 1, 1, 1, 0, 0, 0, 1, 1, 0, 0, 0, 1, 1, 1, 0, 0, 1];) However, the code I wrote spits out 18.
This is what I have-

Accepted Answer

Daniel Pollard
Daniel Pollard on 16 Feb 2021
Edited: Daniel Pollard on 16 Feb 2021
Replace
for i=1;length(V)
with
for ii = 1:length(V)
The semicolon -> colon is a typo I suspect, and i has a built in value so it's a bad idea to use it as a variable. Right now, your code runs for i=1, displays length(V) (which is 18) and does nothing else.
The line
numChanges + = 1
will fail when it reaches it. Replace it with
numChanges = numChanges + 1;
which won't fail.

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