CAN ANYONE HELP ME WITH THIS QUESTION ABOUT LU FACTORIZATION?

The above mylu(A) function is for row operation, how do I modify it so that the function becomes a column operation? Thumbs up will be given. THANKS!!!

upper Column operations yield unit lower Example5 3 96 1 2 3 c3+c3-2c1-1 1 3 extract,L-2-2 2 LU factorization in MATLAB LU factorization (no pivoting implemented) 11 function [L,U] 21 n = size (A, 1); --mylu (A) 3 for k-1:n 4 if A(k, k)-=0 warning ('LU factorization fails'); L = []; U = []; return end i = k+1 : n; 10 end 1Ltril (A,-1) +eye (n); U- triu (A)