The array k*k is given. Replace the elements of the main diagonal with the elements of the additional diagonal.

Question

Python

Answer 1

Gulnur ,

can you please enlighten us what the definition of *main diaginal* and *additional diagonal* is. a sample would be nice.

thanks!

Answer 2

for n in range(k):
arr[n][n]=arr[n][-1-n]

Answer 3

Oma Falk Now it was clear. Thank you very much🤭

Answer 4

Lothar the main Diagonal is a[i] [i], and I didn't understand which additional diagonal is which. But I tried writing code, thinking a[j][j]. Please check if this is correct.

from random import random
k=4
a=[]
for i in range(k):
    z=[]
    for j in range(k):
        n=int(random()*100)
        z.append(n)
        print("%4d"%n,end='')
    print()
    a.append(z)
print()
for i in range(k):
    for j in range(k):
        if i==j:
            b=a[i][j]
            a[i][j]=a[i][k-1-j]
            a[i][k-1-j]=b
for i in range(k):
    for j in range(k):
        print("%4d"%a[i][j],end='')
    print()

Answer 5

k[1][1] = j[1]
k[2][2] = j[2]