Tableau nxn
# A simple Python program to
# find sum of diagonals
MAX = 100
def printDiagonalSums(mat, n):
principal = 0
secondary = 0;
for i in range(0, n):
for j in range(0, n):
# Condition for principal diagonal
if (i == j):
principal += mat[i][j]
# Condition for secondary diagonal
if ((i + j) == (n - 1)):
secondary += mat[i][j]
print("Principal Diagonal:", principal)
print("Secondary Diagonal:", secondary)
# Driver code
a = [[ 1, 2, 3, 4 ],
[ 5, 6, 7, 8 ],
[ 1, 2, 3, 4 ],
[ 5, 6, 7, 8 ]]
printDiagonalSums(a, 4)
# This code is contributed
# by ihritik
Defeated Dolphin