解题思路:以为很难,没想到就是走迷宫的原题 就是方向变了
import java.util.LinkedList;
import java.util.Scanner;
public class Main {
public static void main(String[] args) {
Scanner sc = new Scanner(System.in);
int n = sc.nextInt();
int[][] direction = { { -1, -2 }, { -2, -1 }, { -2, 1 }, { -1, 2 },
{ 1, -2 }, { 2, -1 }, { 2, 1 }, { 1, 2 } };
for (int i = 0; i < n; i++) {
int L = sc.nextInt();
int[][] arr = new int[L + 1][L + 1];
int startx = sc.nextInt();
int starty = sc.nextInt();
int endx = sc.nextInt();
int endy = sc.nextInt();
if (startx == endx && endy == starty) {
System.out.println(0);
continue;
}
int k = 0;
boolean iRet = true;
LinkedList<nnn> queue = new LinkedList<nnn>();
queue.add(new nnn(startx, starty, 0));
arr[startx][starty] = 1;
while (!queue.isEmpty()) {
nnn d = queue.poll();
k = d.step;
if (d.x == endx && d.y == endy) {
System.out.println(d.step);
iRet = false;
break;
}
for (int j = 0; j < direction.length; j++) {
int x = d.x + direction[j][0];
int y = d.y + direction[j][1];
if (x >= 0 && y >= 0 && x < L && y < L && arr[x][y] == 0) {
arr[x][y] = 1;
queue.addLast(new nnn(x, y, d.step + 1));
}
}
}
if(iRet)System.out.println(k);
}
}
}
class nnn {
public int x;
public int y;
public int step;
public nnn(int x, int y, int step) {
this.x = x;
this.y = y;
this.step = step;
}
}0.0分
3 人评分
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