Solution: Greatest Common Divisor of Strings
Understand how to determine the greatest common divisor of two strings by checking pattern repetition and using the Euclidean algorithm for string lengths. This lesson helps you apply mathematical reasoning and string concatenation checks to solve related coding interview questions 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. ...