swap()

[shree vijay]

Hi,
Is there any equivalent to swap(i,j) in Java?
Thanks,
Shree

[Stephanie Grasson]

Shree,
To swap values within a function, use single-element arrays. See example below:

class Test
{
void swap(int x[], int y[]) // this will work
{
int temp = x[0];
x[0] = y[0];
y[0] = temp;
    }
    public static void main(String args[])
    {
    Test myTest = new Test();
    int a = 7, b = 12;
        int arrayA[] = new int[1];
        arrayA[0] = a;
        int arrayB[] = new int[1];
        arrayB[0] = b;
        System.out.println("before swap, arrayA[0] = " + arrayA[0] +
        ", arrayB[0] = " + arrayB[0]);
        myTest.swap(arrayA, arrayB);
        System.out.println("after swap, arrayA[0] = " + arrayA[0] +
        ", arrayB[0] = " + arrayB[0]);
    }
}

Hope this helps.
Stephanie

[Stephanie Grasson]

Shree,
To swap values within a function, use single-element arrays. See example below:

class Test
{
void swap(int x[], int y[]) // this will work
{
int temp = x[0];
x[0] = y[0];
y[0] = temp;
    }
    public static void main(String args[])
    {
    Test myTest = new Test();
    int a = 7, b = 12;
        int arrayA[] = new int[1];
        arrayA[0] = a;
        int arrayB[] = new int[1];
        arrayB[0] = b;
        System.out.println("before swap, arrayA[0] = " + arrayA[0] +
        ", arrayB[0] = " + arrayB[0]);
        myTest.swap(arrayA, arrayB);
        System.out.println("after swap, arrayA[0] = " + arrayA[0] +
        ", arrayB[0] = " + arrayB[0]);
    }
}

Hope this helps.
Stephanie

[shree vijay]

Thanks Stephanie,
I was curious to know if there was any method equivalent for swap... Just plain lasy ...
Shree