Lower Triangular and Upper Triangular Matrix Python

PROGRAM TO PRINT LOWER TRIANGULAR AND UPPER TRIANGULAR MATRIX

# Function to form lower triangular 

# matrix

def lower(matrix, row, col):

  

      

    for i in range(0, row):

      

        for j in range(0, col):

          

            if (i < j):

              

                print("0", end = " ");

              

            else:

                print(matrix[i][j], 

                       end = " " );

          

        print(" ");

      

# Function to form upper triangular marix

def upper(matrix, row, col):

  

    for i in range(0, row):

      

        for j in range(0, col):

          

            if (i > j):

                print("0", end = " ");

              

            else:

                print(matrix[i][j], 

                       end = " " );

          

        print(" ");

  

# Driver Code

matrix = [[1, 2, 3], 

          [4, 5, 6], 

          [7, 8, 9]];

row = 3;

col = 3;

      

print("Lower triangular matrix: ");

lower(matrix, row, col);

      

print("Upper triangular matrix: ");

upper(matrix, row, col);

OUTPUT

Lower triangular matrix: 
1 0 0 
4 5 0 
7 8 9 
Upper triangular matrix: 
1 2 3 
0 5 6 
0 0 9