Creating a stepped pattern of zeros in an array

Hello all,

I was hoping if anyone knows of a way to create the 'A' matrix consisting of 1s and 0s as shown below. I need to create a very large version of this example and was hoping to accomplish this without the use of loops.

A =

1 1 1 1

1 1 1 0

1 1 0 0

1 0 0 0

Thank you in advance for any help or tips,

Chris

Answer 1

[madhan ravi]

flip(tril(ones(4)))

[Christopher]

Perfect!

Thank you so much for your answer and very prompt response.

-Chris