Finding numChanges in array

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-

Answer 1

[Daniel Pollard]

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.