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- package land_monitoring_gui;
- public class Land_Monitoring {
- private static int[] b = new int[8];
- private static int s = 0;
- static boolean unsafe(int y) {
- int x = b[y];
- for (int i = 1; i <= y; i++) {
- int t = b[y - i];
- if (t == x ||
- t == x - i ||
- t == x + i) {
- return true;
- }
- }
- return false;
- }
- public static void putboard() {
- System.out.println("\n\nSolution " + (++s));
- for (int y = 0; y < 8; y++) {
- for (int x = 0; x < 8; x++) {
- System.out.print((b[y] == x) ? "|Q" : "|_");
- }
- System.out.println("|");
- }
- }
- public static void main(String[] args) {
- int y = 0;
- b[0] = -1;
- while (y >= 0) {
- do {
- b[y]++;
- } while ((b[y] < 8) && unsafe(y));
- if (b[y] < 8) {
- if (y < 7) {
- b[++y] = -1;
- } else {
- putboard();
- }
- } else {
- y--;
- }
- }
- }
- }
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