Create a triangle

Modify the function to return a 2D list which itself represents a triangle filled with the same symbol passed to the function. The function should accept two arguments - the height of the triangle and the symbol which needs to be filled in that triangle. If there is no value provided, the triangle needs to be filled with #.
Input
Output
3 *
[['*'], ['*', '*'], ['*', '*', '*']]
2
[['#'], ['#', '#']]
 

Constraints

Time limit: 2 seconds

Memory limit: 512 MB

Output limit: 1 MB

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