Difference between Left Factoring and Left Recursion

Question

What is the difference between Left Factoring and Left Recursion ? I understand that Left factoring is a predictive top down parsing t

Answer 1

left recursion:= when left hand non terminal is same as right hand non terminal. Example: A->A&|B where & is alpha. We can remove left ricursion using rewrite this production as like.

A->BA' A'->&A'|€

Left factor mean productn should not non deterministic. . Example: A->&A|&B|&C