Answer to Question #311276 in Python for Manish

Question

Unique Matrix

You are given a N*N matrix. write a program to check if the matrix is unique or not. A unique Matrix is a matrix if every row and column of the matrix contains all the integers from 1 to N

Input:

The first line contains an integer N.

The next N lines contains N space separated values of the matrix.

Output:

The output contains a single line and should be True if the matrix is unique matrix and False otherwise.

Sample Input1

4

1 2 3 4

2 3 4 1

3 4 1 2

4 1 2 3

Sample Output1

True

Sample Input2

4

1 2 3 3

2 3 4 1

3 4 1 2

4 1 2 3

Sample Output2

False

Answer 1

arr = [ [1,2,3,4,5],
        [3,4,2,5,1],
        [2,1,5,3,4],
        [4,5,1,2,3],
        [5,3,4,1,2]];
 
dict = {}        
for i in range(len(arr)):
        for j in range(len(arr[i])):
            if dict.get(arr[i][j]) is None:
                dict[arr[i][j]] = 1
            else:
                dict[arr[i][j]] = dict.get(arr[i][j]) + 1


is_unique = True


for key in dict:
    if dict.get(key) != len(arr) or key > len(arr) or key < 1:
      print(key)
      print(dict.get(key))
      is_unique = False
print(is_unique)