Can someone explain to me the algorithm for solving this quiz in C#?🤔😀

Question

var size = 10;
var matrix = new int[size, size];
for (int row = 0; row < size; row++) {
for (int col = 0; col < row; col++) {
matrix [row, col] = 1;
}
}
Console.Write(matrix[3, 7]);

Output: 0.

Answer 1

It's because when the row is 3, the column can't be more than 2 (because the limit of the col is row). So when the element at index 3 and 7 is not set by default is 0. Hope it helps you 😉

Answer 2

Thanks TheWh¡teCat for the answer😀👍👍

Answer 3

You are welcome, Sharof Gafurov🇺🇿 😉👍

Answer 4

I was confused trying to evaluate it inside my brain. Its seems like output should be 1 until you realise that nested loop is col < row.
Tricky challenge 😉👍

Answer 5

If output matrix[10 , 10]

0 1 2 3 4 5 6 7 8 9 10
0 0 0 0 0 0 0 0 0 0 0 0
1 1 0 0 0 0 0 0 0 0 0 0
2 1 1 0 0 0 0 0 0 0 0 0
3 1 1 1 0 0 0 0 0 0 0 0
4 1 1 1 1 0 0 0 0 0 0 0
5 1 1 1 1 1 0 0 0 0 0 0
6 1 1 1 1 1 1 0 0 0 0 0
7 1 1 1 1 1 1 1 0 0 0 0
8 1 1 1 1 1 1 1 1 0 0 0
9 1 1 1 1 1 1 1 1 1 0 0
10 1 1 1 1 1 1 1 1 1 1 0

matrix[3 , 7] = 0;

😁😁😁😁😁😁😁😁😁😁

Answer 6

Example of Ruby