从字符串数组拆分为数组

Question

I am using Java 1.4 for an old project.

I have a string array

       String a[0]={"200,300"}
       String a[1]={"700,500"}
       String a[2]={"900,400"}  

as so on,

for this I need to create 2 string array to get the first value in a string array and second value in different string array.

ex:

String a[0]="200"
String a[1]="700"
String a[2]="900"

String b[0]="300"
String b[1]="500"
String b[2]="400"

I am not getting how can I do this.

Answer 1

If the length of the string array is known,

String[] newString = new String [6];
int count = 0;
for(int i = 0; i<3 ; i++){
   newString[i] = a[i];
   count++;
}
for(int j=0; j<3; j++){
   newString[count] = b[j];
   count++;
}

EDIT: Previously i got your question wrong. The following solution will help you. to divide a into 2 string arrays.

    String a[] = new String [3];
       a[0]={"200,300"};
       a[1]={"700,500"};
       a[2]={"900,400"};

    String[] newStr1 = new String [a.length];
    String[] newStr2 = new String [a.length];

    for(int i = 0; i<3 ; i++){
       String [] x= a[i].split(",");
       newStr1[i] = x[0];
       newStr2[i] = x[1];

    }

Answer 2

Looking at your code, this provides you the correct solution,

int n = 3; //This can change as your array size is not known
String a[] = new String [n];
   a[0]="200,300";
   a[1]="700,500";
   a[2]="900,400"; //And So on


String[] b1 = new String [n];
String[] b2 = new String [n];

for(int i = 0; i<n ; i++)
{
   String [] numbers= a[i].split(",");
   b1[i] = numbers[0];
   b2[i] = numbers[1];
}

Answer 3

First you cant defined String array as string a[1]={700,500} . It is wrong way.

And second, Here is what you want :

a[0]=new String[]{"200","300"};
a[1]=new String[]{"700","500"};
a[2]=new String[]{"900","400"};

String x[] = new String[a.length];
String y[] = new String[a.length];
for(int i=0;i<a.length;i++){
    x[i] = a[i][0];
    y[i] = a[i][1];
}