Flattens two level array into a single level
target two level array
resulting single level array
let a = [[1,2,3],[4,5,6],[7]];utilArrayFlatten(a); // returns: [1,2,3,4,5,6,7]; Copy
let a = [[1,2,3],[4,5,6],[7]];utilArrayFlatten(a); // returns: [1,2,3,4,5,6,7];
Flattens two level array into a single level