One Away

There are three types of edits that can be performed on strings:

• Insert a character
• Remove a character
• Replace a character

Given two strings, write a function to check if they are one edit (or zero edits) away.

Examples:

("pale", "ple")   → True   (remove 'a')
("pales", "pale") → True   (remove 's')
("pale", "bale")  → True   (replace 'p' with 'b')
("pale", "bake")  → False  (two replacements)