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class MagicSquare{
final int maxSize;
int size;
int mSquare [][];
int row, col;
public MagicSquare (int s){
maxSize = 15;
if (s > maxSize)
size = maxSize;
else
size = s;
mSquare = new int [size][size];
row = col - 0;
intSquare();
}
private void intSquare(){
int count, mid;
for (row = 0; row<size; row++)
for (col = 0; col < size; col++)
mSquare [row][col] = 0;
count = 1;
mid = size/2;
row = 0;
col = mid;
while (count <= size * size) {
if(mSquare [row][col] != 0)
back();
mSquare[row][col] = count;
count ++;
forward();
}
}
private void forward(){
row --;
col ++;
check();
}
private void back(){
row++;
col--;
check();
row++;
check();
}
private void check(){
if(row < 0){
row = size - 1;
}
else {
if(row ==size){
row = 0;
}
}
if(col < 0){
col = size - 1;
}
else {
if(col == size){
col=0;
}
}
}
}
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