问题
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.
回答1:
Your question already says the correct answer ^^ but for completeness.
A Jagged or also called Ragged array is a n-dimensional array that need not the be reactangular means:
int[][] array = {{3, 4, 5}, {77, 50}};
For more examples you could look here and here!
回答2:
Jagged array is array of arrays such that member arrays can be of different sizes, i.e., we can create a 2-D arrays but with variable number of columns in each row. These type of arrays are also known as ragged arrays.
Contents of 2D Jagged Array
0
1 2
3 4 5
6 7 8 9
10 11 12 13 14
http://www.geeksforgeeks.org/jagged-array-in-java/
回答3:
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];
回答4:
Ragged array: is an array with more than one dimension each dimension has different size
ex:
10 20 30
11 22 22 33 44
77 88
Jagged array: an array where each item in the array is another array. C# Code:
int[][] jaggedArray = new int[3][];
jaggedArray[0] = new int[5];
jaggedArray[1] = new int[4];
jaggedArray[2] = new int[2];
来源：https://stackoverflow.com/questions/18269123/ragged-and-jagged-arrays