如何在应用程序启动之间存储整数数组?

I want to store some data as a matrix of integers. For simplicity let's say I want to store this data in an array of integers. After each app launch I want to fill my model using this array. So the question is How to store arrays of integer in sandbox? I don't want to write and rewrite data, maybe only once at first start.I want to store some data as a matrix of intege