Riot Games Software Engineer(Internship) interview questions

Matrix

You have 3 things 1) flower F 2) Walls W 3) empty spaces. you will get an input to determine the size of a matrix and then get input to show positions of flowers and walls e.x. 2,2 (size of matrix) F,0,1 (position of a flower) W,1,1 (position of a wall) and you are supposed to print the output of the grid like this BF BW because the position 0,0 and 1,0 are blank they presented in the output with B