Java String a method for converting a double two-dimensional array _java

WHY

Friends in the group to ask for a question, the problem prototype is this:

String str = "{{10.14, 11.24, 44.55, 41.01},{12.10, 14.21, 52.14, 50.44},{14.44, 16.12, 45.42, 47.55}}";
Convert to double[][]{ 
      {10.14, 11.24, 44.55, 41.01}, 
      {12.10, 14.21, 52.14, 50.44}, 
      {14.44, 16.12, 45.42, 47.55} 
    }

A two-dimensional array that converts a string that can be converted into a double.

How

At first glance, it feels so simple, it's implemented, and it's customary to paste the code first:

String str = "{{10.14, 11.24, 44.55, 41.01},{12.10, 14.21, 52.14, 50.44},{14.44, 16.12, 45.42, 47.55}}";
		str = str.replace ("{", "["). Replace ("}", "]");
		string[][] arr = json.parseobject (str, string[][].class);
		Double[][] ds = new Double[arr.length][arr[0].length];
		for (int j=0;j<arr.length;j++) {for
			(int i=0;i<arr[0].length;i++) {
				Ds[j][i] = double.valueof (arr[j][ I]);
			}
		

Here are a few points to be aware of

1. Replace the curly braces with the brackets first,

2. Using JSON transformation, first turn into a string two-dimensional array

3. Then the value in the array is converted to a double

4. The JSON package I use is Fastjson.

Import Com.alibaba.fastjson.JSON;

The above is the small series for everyone to bring Java String into a double two-dimensional array of methods all the content, I hope that we support the cloud Habitat Community ~