how to figure out if there exists duplicated rows in a cell?

I'm generating a cell array like this,

216 46 0.503045247761871

190 49 3.58273130505241,

every time I put new data in this cell, I need to verify if it's a duplicated one,

such as, I get 190 49 3.58273130505241 again, which is a duplicated one, so I need to move on and generate another data.

I want to get a value Flag,

if the new data I want to put into the cell array is duplicated, then Flag =1,

else Flag =0.

[Walter Roberson]

Where are the boundaries of the cell array? That just looks like a numeric array.

[Jiajie Zhang]

Yes, it's a numeric array, but I store it in a cell.

[Walter Roberson]

Is it a cell array in which each cell entry contains one numeric row? Is it a cell array in which each cell entry contains a varying number of numeric rows and you want to look through all of the entries?