String to int array

Question

I have the following code as Strings

[444398, 1]
[111099, 0]
[188386, 2]
[149743, 0]

and I want to make a two-dimensional array with each number as an int. For example,

int[][] temp = new int[4][2]

I am trying to use

String challengetemp = Arrays.toString(Challenge.challenge(players[0], players[1]));
challengeList[i][i] = Integer.parseInt(challengetemp.split("\\|",-1));

but for starters, ParseInt is getting a type mismatch and results in an error.

I would need to be able to access the info from the array afterwards as integers

parseInt(String) accepts a String as a parameter, not a String[], which is what the split(String, int) returns. — f1sh
– f1sh, Commented Jul 12, 2013 at 18:26
Why are you splitting on |? Can we see how your actual input look like? And what is Challenge? Please post an SSCCE — Rohit Jain
– Rohit Jain, Commented Jul 12, 2013 at 18:26
(I haven't checked these in code yet, but..) splitting on "[\\[\\]\n]" should split up your string on the first index, then splitting on "," should take care of the inner arrays. — AdamSpurgin
– AdamSpurgin, Commented Jul 12, 2013 at 18:30

iCurious · Accepted Answer · 2013-07-13 08:51:59Z

And I would utilize StringTokenizer to do something like this.

    String str = "[444398, 1][111099, 0][188386, 2][149743, 0]";

        str = str.replace("[","");
        str = str.replace("]","|");

        int arr[][] = new int[4][2];
        StringTokenizer token = new StringTokenizer(str,"|");
        for(int i=0;i<4;i++)
        {
            StringTokenizer nextToken = new StringTokenizer(token.nextToken(),",");
         for(int j=0;j<2;j++)
          {
            String tokenValue = nextToken.nextToken();
            if(tokenValue.contains("|"))
            {
                tokenValue.replace("|", "");
            }
            arr[i][j]= Integer.parseInt(tokenValue.trim());
          }
        }

        for (int i = 0; i < 4; i++) {
            for (int j = 0; j < 2; j++) {
                System.out.println(arr[i][j]);
            }
        };

And you would have to modify a little to the loop, so that it would parse as many String to int array as you want.

Brinnis · Accepted Answer · 2013-07-12 18:31:06Z

1

I would do something like this:

    String string = "[444398, 1]";
    string = string.substring(1, string.length()-1); //Turns it into "444398, 1"
    String[] stringInArray = string.split(", "); // Then makes it ["444398", "1"]

    int[][] temp = new int[4][2];

    temp[0][0] = Integer.parseInt(stringInArray[0]);
    temp[0][1] = Integer.parseInt(stringInArray[1]);

You will have to modify it into a loop for doing multiple of course!

answered Jul 12, 2013 at 18:31

Brinnis

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