Center a list within a larger array.
CenterArray[a, n]
CenterArray[a, {n1, n2, …}]
CenterArray[a, nspec, pad]
CenterArray[nspec]
CenterArray[{a, b, c}, 2]
→ {b, c}CenterArray[x, 5]
→ {0, 0, x, 0, 0}CenterArray[x, {5, 5}]
→ {{0, 0, 0, 0, 0}, {0, 0, 0, 0, 0}, {0, 0, x, 0, 0}, {0, 0, 0, 0, 0}, {0, 0, 0, 0, 0}}CenterArray[5]
→ {0, 0, 1, 0, 0}