How can I make all the variables in an array 0 after the first time 0 occurs in the array

I am trying to create a weighting function based on a set of criteria. When the weighting function is created, I get an array containing 1's and 0's. However, I am trying to force the array to be all 0's once the first 0 occurs.

For example: x = [1,1,1,1,1,0,0,1,1,0,0,0...] for which I would then like it to read x = [1,1,1,1,1,0,0,0,0,0,0,0...].

Any tips would be greatly appreciated.

Answer 1

[Guillaume]

A very simple solution that only works with an array of 0 and 1 starting with 1:

x = [1,1,1,1,1,0,0,1,1,0,0,0]
cumprod(x)

[Walter Roberson]

I find in practice that most of the time that I want to do this, I want to work row by row; in that case I need to be sure to specify the dimension number,

cumprod(x,2)

[Stephen23]

Without a leading one:

>> x = [0,0,1,1,1,1,1,0,0,1,1,0,0,1,0]
x =
   0   0   1   1   1   1   1   0   0   1   1   0   0   1   0
>> x .* (1==cumsum(0<diff([0,x])))
ans =
   0   0   1   1   1   1   1   0   0   0   0   0   0   0   0

Answer 2

[jgg]

Generate your x as normal, with the many 1's afterwards then call:

 x = [1,1,1,1,1,0,0,1,1,0,0,0]; %generate x
 x(find(x == 0,1,'first'):end) = 0

[Nick Pera]

great!! worked perfectly. thank you!

[jgg]

Accept this answer if it solved your problems so other can use it!