基本信息
源码名称:广度优先搜索
源码大小:1.32KB
文件格式:.py
开发语言:Python
更新时间:2021-03-16
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源码介绍
rom collections import deque
maze = [
[1, 1, 1, 1, 1, 1, 1, 1, 1, 1],
[1, 0, 0, 1, 0, 0, 0, 1, 0, 1],
[1, 0, 0, 1, 0, 0, 0, 1, 0, 1],
[1, 0, 0, 0, 0, 1, 1, 0, 0, 1],
[1, 0, 1, 1, 1, 0, 0, 0, 0, 1],
[1, 0, 0, 0, 1, 0, 0, 0, 0, 1],
[1, 0, 1, 0, 0, 0, 1, 0, 0, 1],
[1, 0, 1, 1, 1, 0, 1, 1, 0, 1],
[1, 1, 0, 0, 0, 0, 0, 0, 0, 1],
[1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
]
dirs = [
lambda x,y: (x 1,y),
lambda x,y: (x-1,y),
lambda x,y: (x,y 1),
lambda x,y: (x,y-1)
]
def print_r(path):
curNode = path[-1]
realpath = []
while curNode[2] != -1:
realpath.append(curNode[0:2])
curNode = path[curNode[2]]
realpath.append(curNode[0:2]) #起点
realpath.reverse()
for node in realpath:
print(node)
def maze_path_queue(x1,y1,x2,y2):
queue = deque()
queue.append((x1,y1,-1))
path = []
while len(queue) > 0:
curNode = queue.popleft()
path.append(curNode)
if curNode[0] == x2 and curNode[1] == y2:
print_r(path)
return False
for dir in dirs:
nextNode = dir(curNode[0],curNode[1])
if maze[nextNode[0]][nextNode[1]] == 0:
queue.append((nextNode[0],nextNode[1],len(path)-1))
maze[nextNode[0]][nextNode[1]] = 2
else:
print("没有路")
return False
maze_path_queue(1,1,8,8)
rom collections import deque
maze = [
[1, 1, 1, 1, 1, 1, 1, 1, 1, 1],
[1, 0, 0, 1, 0, 0, 0, 1, 0, 1],
[1, 0, 0, 1, 0, 0, 0, 1, 0, 1],
[1, 0, 0, 0, 0, 1, 1, 0, 0, 1],
[1, 0, 1, 1, 1, 0, 0, 0, 0, 1],
[1, 0, 0, 0, 1, 0, 0, 0, 0, 1],
[1, 0, 1, 0, 0, 0, 1, 0, 0, 1],
[1, 0, 1, 1, 1, 0, 1, 1, 0, 1],
[1, 1, 0, 0, 0, 0, 0, 0, 0, 1],
[1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
]
dirs = [
lambda x,y: (x 1,y),
lambda x,y: (x-1,y),
lambda x,y: (x,y 1),
lambda x,y: (x,y-1)
]
def print_r(path):
curNode = path[-1]
realpath = []
while curNode[2] != -1:
realpath.append(curNode[0:2])
curNode = path[curNode[2]]
realpath.append(curNode[0:2]) #起点
realpath.reverse()
for node in realpath:
print(node)
def maze_path_queue(x1,y1,x2,y2):
queue = deque()
queue.append((x1,y1,-1))
path = []
while len(queue) > 0:
curNode = queue.popleft()
path.append(curNode)
if curNode[0] == x2 and curNode[1] == y2:
print_r(path)
return False
for dir in dirs:
nextNode = dir(curNode[0],curNode[1])
if maze[nextNode[0]][nextNode[1]] == 0:
queue.append((nextNode[0],nextNode[1],len(path)-1))
maze[nextNode[0]][nextNode[1]] = 2
else:
print("没有路")
return False
maze_path_queue(1,1,8,8)