cal transpose of a matrix.

Write a program to calculate transpose of a matrix.
object HelloWorld
{
def main(args:Array[String])
{
var mat=Array.ofDimInt;
var rmat=Array.ofDimInt;

for(i<-0 to 2)
{
for(j<-0 to 2)
{
mat(i)(j)=scala.io.StdIn.readInt();
}
println();
}
for(i<-0 to 2)
{
for(j<-0 to 2)
{
rmat(i)(j)=mat(j)(i);
}
}
println("Transepose of Matrix is:");
for(i<-0 to 2)
{
for(j<-0 to 2)
{
print(rmat(i)(j)+" ");
}
println();
}
}
}