Java Utililty Methods Array Two Dimension to One Dimension

assert (target.length == src.length);
for (int i = 0; i < target.length; ++i) {
    int array_length = src[i].length;
    target[i] = new String[src[i].length];
    System.arraycopy(src[i], 0, target[i], 0, array_length);

int n = src.length;
for (int i = 0; i < n; i++) {
    System.arraycopy(src[i], 0, dest[i], 0, n);

int W = In.length;
int H = In[0].length;
double[] Out = new double[H * W];
for (int j = 0; j < H; j++)
    for (int i = 0; i < W; i++)
        Out[j * W + i] = In[i][j];
return Out;

int b = in.length, c = in[0].length;
float[] out = new float[b * c];
for (int i = 0; i < b; i++) {
    System.arraycopy(in[i], 0, out, i * c, c);
return out;

int i, j;
double b[];
b = new double[m * n];
for (i = 0; i < m; i++)
    for (j = 0; j < n; j++)
        b[i * n + j] = a[i][j];
return b;

int[] array1D = new int[array2D[0].length * array2D.length];
for (int x = 0; x < array2D.length; x++) {
    for (int y = 0; y < array2D[0].length; y++) {
        array1D[(x * array2D.length) + y] = array2D[x][y];
return array1D;

int hight = d2.length;
int width = d2[0].length;
int[] modImgArray = new int[width * hight];
for (int i = 0; i < hight; i++) {
    System.arraycopy(d2[i], 0, modImgArray, i * width, width);
return modImgArray;

short[][] square = new short[rows][cols];
int c = 0, r = 0;
for (int i = 0; i < ar.length; i++) {
    if (c == cols) {
        c = 0;
        r++;
    square[r][c] = ar[i];
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