13.)

private int[][] squareMat = {{3,1,7},

{8,7,3},

{6,4,2}};

public void fun(){

for(int r = 0; r < squareMat.length / 2; r++)

for(int c = 0; c <= r; c++)

squareMat[r][c] = squareMat[c][r];

}

////////////////////////////////////////////////////////////////////////////////////////////////

//test code in another method of the same class

fun();

out.println(squareMat[2][2]);

a.) 2

b.) 7

c.) 6

d.) 8

e.) 1