Solution: Greatest Common Divisor of Strings
Understand how to find the greatest common divisor of two strings by examining string concatenation and applying the Euclidean algorithm. This lesson helps you grasp the mathematical and coding principles behind checking if one string divides another and how to determine the maximum common repeating pattern efficiently.
We'll cover the following...
We'll cover the following...
Statement
For two strings s and t, we say that t divides s if and only if s can be formed by concatenating one or more copies of t together (i.e., s = t + t + ... + t).
Given two strings str1 and str2, return the largest string x such that x divides both str1 and str2. If no such string exists, return an empty string.
Constraints:
str1.length,str2.lengthstr1andstr2consist of English uppercase letters. ...