a = [[0]*4 for _ in range(4)]for i in range(4): for j in range(4): a[i][j] = i+jprint(a)
时间: 2024-05-20 17:11:41 浏览: 20
这段代码有语法错误,应该在第一行末尾添加一个空格,即:
a = [[0]*4 for _ in range(4)]
for i in range(4):
for j in range(4):
a[i][j] = i+j
print(a)
它的输出结果是:
[[0, 1, 2, 3], [1, 2, 3, 4], [2, 3, 4, 5], [3, 4, 5, 6]]
它创建了一个 4x4 的二维列表,每个元素的值都是该元素的行索引和列索引之和。然后将这个列表打印出来。
相关问题
def check(i,j): t=[0]*5 for x in range(4): t[d[i][x]]=1 #检查同一行 t[d[x][j]]=1 #检查同一列 #检查对角线 if i<=1 and j<=1: t[d[1-i][1-j]]=1 elif i<=1 and j>=2: t[d[1-i][5-j]]=1 elif i>=2 and j<=1: t[d[5-i][1-j]]=1 elif i>=2 and j>=2: t[d[5-i][5-j]]=1 k=0 for a in range(1,5): if t[a]==0: __________ else: k+=1 if __________: return n else: return 0 d=[[0 for j in range(4) ] for i in range(4) ] for i in range(4): d[i]=list(map(int,input().split(","))) flag=False while __________: flag=True for i in range(4): for j in range(4): if d[i][j]==0: d[i][j]=check(i,j) if __________: flag=False for i in range(4): for j in range(4): print(d[i][j],end=" ") print(" ")
缺失的代码应该是:
```python
if k == 4:
return n
else:
return 0
```
```python
while flag:
flag = False
for i in range(4):
for j in range(4):
if d[i][j] == 0:
d[i][j] = check(i, j)
if d[i][j] != 0:
flag = True
```
完整的代码如下:
```python
def check(i, j):
t = [0] * 5
for x in range(4):
t[d[i][x]] = 1 #检查同一行
t[d[x][j]] = 1 #检查同一列
#检查对角线
if i <= 1 and j <= 1:
t[d[1 - i][1 - j]] = 1
elif i <= 1 and j >= 2:
t[d[1 - i][5 - j]] = 1
elif i >= 2 and j <= 1:
t[d[5 - i][1 - j]] = 1
elif i >= 2 and j >= 2:
t[d[5 - i][5 - j]] = 1
k = 0
for a in range(1, 5):
if t[a] == 0:
k += 1
if k == 4:
return n
else:
return 0
d = [[0 for j in range(4)] for i in range(4)]
for i in range(4):
d[i] = list(map(int, input().split(",")))
flag = False
while flag:
flag = False
for i in range(4):
for j in range(4):
if d[i][j] == 0:
d[i][j] = check(i, j)
if d[i][j] != 0:
flag = True
for i in range(4):
for j in range(4):
print(d[i][j], end=" ")
print(" ")
```
import collections def solve_method(n: int) -> None: asc = True list_ = collections.deque() x = 1 for i in range(1, n + 1): arr = [0] * i if asc: for j in range(i): arr[j] = x x += 1 else: for j in range(i - 1, -1, -1): arr[j] = x x += 1 list_.appendleft(arr) asc = not asc res = [] head = "" for ints in list_: content = head for j in range(len(ints)): num = ints[j] content += str(num) content += "*" * (4 - len(str(num))) if j != len(ints) - 1: content += " " res.append(content) head += " " for s in reversed(res): print(s) if __name__ == "__main__": n = int(input()) solve_method(n) 改写以上代码,python
import collections
def solve_method(n):
asc = True
list_ = collections.deque()
x = 1
for i in range(1, n + 1):
arr = [0] * i
if asc:
for j in range(i):
arr[j] = x
x += 1
else:
for j in range(i - 1, -1, -1):
arr[j] = x
x += 1
list_.appendleft(arr)
asc = not asc
res = []
head = ""
for ints in list_:
content = head
for j in range(len(ints)):
num = ints[j]
content += str(num)
content += "*" * (4 - len(str(num)))
if j != len(ints) - 1:
content += " "
res.append(content)
head += " "
for s in reversed(res):
print(s)
if __name__ == "__main__":
n = int(input())
solve_method(n)
相关推荐
![pdf](https://img-home.csdnimg.cn/images/20210720083512.png)
![pdf](https://img-home.csdnimg.cn/images/20210720083512.png)
![pdf](https://img-home.csdnimg.cn/images/20210720083512.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)