java - How to flatten 2D array to 1D array?

Question

How can I flatten the 2 dimensions array int originalArray[][] to 1 dimension array?

    int a [] = {1,2,6,7,2};
    int b [] = {2,44,55,2};
    int c [] = {2,44,511,33};

    int originalArray [][] = new int[][]{a,b,c};

Answer 1

With Guava, you can use either

int[] all = Ints.concat(originalArray);

or

int[] all = Ints.concat(a, b, c);