Programming
Write a static method named xo that accepts an integer size as a parameter and prints a square of size by size characters, where all characters are "o" except that an "x" pattern of "x" characters has been drawn from the corners of the square. In other words, on the first line, the first and last characters are "x"; on the second line, the second and second-from-last characters are "x"; and so on. If 0 or less is passed for the size, no output should be produced.
The following table lists some calls to your method and their expected output:

Question

Quizplus · Accepted Answer

The Answer is There are many ways to solve any programming problem. Here are some common correct solutions we saw:
public static void xo(int size) {
for (int i = 1; i <= size; i++) {
for (int j = 1; j <= size; j++) {
if (j == i || j == size - (i - 1)) { // note the (i - 1), not i
System.out.print("x");
} else {
System.out.print("o");
}
}
System.out.println();
}
}
public static void xo(int size) {
for (int i = 0; i < size; i++) {
for (int j = 0; j < size; j++) {
if (j == i || j == size - 1 - i) {
System.out.print("x");
} else {
System.out.print("o");
}
}
System.out.println();
}
}
public static void xo(int size) {
int x1 = 1;
int x2 = size;
for (int i = 1; i <= size; i++) {
for (int j = 1; j <= size; j++) {
if (x1 == j || x2 == j) {
System.out.print("x");
} else {
System.out.print("o");
}
}
System.out.println();
x1++;
x2--;
}
}
public static void xo(int size) {
for (int i = 0; i < size / 2; i++) { // top half
repeat("o", i);
repeat("x", 1);
repeat("o", size - 2*i - 2);
repeat("x", 1);
repeat("o", i);
System.out.println();
}
if (size % 2 != 0) { // middle line (when odd size)
repeat("o", size / 2);
repeat("x", 1);
repeat("o", size / 2);
System.out.println();
}
for (int i = size / 2 - 1; i >= 0; i--) { // bottom half
repeat("o", i);
repeat("x", 1);
repeat("o", size - 2*i - 2);
repeat("x", 1);
repeat("o", i);
System.out.println();
}
}
public static void repeat(String s, int n) {
for (int i = 0; i < n; i++) {
System.out.print(s);
}
}

Programming Write a Static Method Named Xo That Accepts an Integer