Message386603
def generateMatrix(A):
d=A-1
data=1
B=[[0]*A]*A
for l in range(int(A/2)):
i=l
j=l
for a in range(d):
B[i][j]=data
print("{0}:{1}:{2}".format(i,j,B[i][j]),end=" ")
data+=1
j+=1
print()
for a in range(d):
B[i][j]=data
print("{0}:{1}:{2}".format(i,j,B[i][j]),end=" ")
data+=1
i+=1
print()
for a in range(d):
B[i][j]=data
print("{0}:{1}:{2}".format(i,j,B[i][j]),end=" ")
data+=1
j-=1
print()
for a in range(d):
B[i][j]=data
print("{0}:{1}:{2}".format(i,j,B[i][j]),end=" ")
data+=1
i-=1
print()
d=d-2
print(d)
print(B)
if d==0:
B[int(A/2)][int(A/2)]=data
print(B[int(A/2)][int(A/2)])
print(B)
return B
#This code is for generating spiral matrix
##if i'm using different approach to create 2d list . Then i'm getting right output .
in above code i used B=[[0]*A]*A and getting wrong output . A is positive integer.
##If i'm using for i in range(A-1):
B.append([0]*A)
then i'm getting correct output.
but the 2d list generated using both the approach are same.
2d list from approach 1== 2d list from approach 2 ------->it is true |
|
Date |
User |
Action |
Args |
2021-02-07 19:12:10 | samrajput1143 | set | recipients:
+ samrajput1143 |
2021-02-07 19:12:10 | samrajput1143 | set | messageid: <1612725130.15.0.430855994537.issue43157@roundup.psfhosted.org> |
2021-02-07 19:12:10 | samrajput1143 | link | issue43157 messages |
2021-02-07 19:12:10 | samrajput1143 | create | |
|