Write a program to find if the given matrix is an upper triangle matrix.
Assume that matrices are square matrices.
Input (Two Dimensional matrix) |
Output (boolean) |
5 4 5 0 6 2 0 0 8 |
true |
5 2 3 8 0 1 9 7 0 0 0 4 0 0 0 6 |
true |
0 0 0 0 |
true |
0 9 2 8 0 4 6 4 0 |
false |
12 89 77 0 99 66 45 0 111 |
false |