Matrix Diagonal Pattern

 Coding Problem Keys 

 Matrix Diagonal Pattern 

 Problem Statement 

Given an integer matrix of size N*N as input, the program must print only the diagonal elements. The remaining elements must be replaced by *.

 Boundary Condition(s) 

1 <= N <= 50

 Input Format 

The first line contains the value of N.

The next N lines contain N values separated by space(s).

 Output Format 

The first N lines contain the modified matrix as mentioned above.

 Example Input/Output 1 

 Input 

3

1 8 9

4 8 7

5 2 8

 Output 

1 * 9

* 8 *

5 * 8

 Example Input/Output 2 

 Input 

6

31 62 5 8 39 3

37 2 79 76 97 81

9 1 43 86 5 37

9 77 85 45 87 36

41 6 65 75 9 3

22 69 45 83 20 90

 Output 

31 * * * * 3

* 2 * * 97 *

* * 43 86 * *

* * 85 45 * *

* 6 * * 9 *

22 * * * * 90

 Max Execution Time Limit: 5000 millisecs 

 Solution 

 Programming Language: Python 3 Language 

n=int(input())
l=[list(map(int,input().split())) for i in range(n)]
for i in range(n):
    for j in range(n):
        if i==j or i+j==n-1:
            print(l[i][j],end=" ")
        else:
            print('*',end=" ")
    print()

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