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Lalit
How This solution is ....,
September 22, 2010 at 7:08 PM

int length = arr.length;

for(int x= 0; x < (length/2) ; x++)
{
char prev = arr[x];
char next = arr[(length-1)-x];
arr[x] = next;
arr[(arr.length-1)-x]= prev;
}
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