ake a 2 dimensional array, and 'flatten it' meaning, turn it into a single 1 dimensional array. The work should be done in a static method, where a 2D array is passed to it. Don't assume the 2D array has the same number of elements per array.

public static int [] flatten (int [] [] twoD){}

Your output should contain the 2D array (You can straight print it), and the array flattened. The goal is to prove to me that it works.

{{1,2,3,4}, {5,6}, {7,8,9}, {0}};

Should look like {1,2,3,4,5,6,7,8,9,0}

must be written in java