Ragged and Jagged Arrays

Question

What is the difference between ragged and jagged arrays? As per my research both have the same definitions, i.e. two-dimensional arrays with different column lengths.

Answer 1

Ragged Array is also known as Jagged Array

1- A jagged array is non uniform array

2- Inner arrays can't be initialized so the following code snippet is going to fail

   double[][] jagged = new double[2][3]; //error

3- Instead each inner array is initialized separately

   double[][] jagged = new double[2][];
   jagged[0] = new double[5];
   jagged[1] = new double[7];