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class Transpose
{
public static void main(String... args)
{
int[][] m = {{7, 8, 9},
{4, 5, 6},
{1, 2, 3}};
int n = 3; // some sort of abstraction
System.out.println("Original matrix:");
for (int i = 0; i < n; ++i)
System.out.printf("%d %d %d\n", m[i][0], m[i][1], m[i][2]);
for (int i = 1; i < n; ++i)
for (int j = 0; j < i; ++j)
{
m[i][j] ^= m[j][i];
m[j][i] ^= m[i][j];
m[i][j] ^= m[j][i];
}
System.out.println("Transposed matrix:");
for (int i = 0; i < n; ++i)
System.out.printf("%d %d %d\n", m[i][0], m[i][1], m[i][2]);
}
}
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