#688Easy#2 in TikTok's list· asked at 3 companies
Greatest Common Divisor of Strings
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What we know
Example 1
Input: str1 = "ABCABC", str2 = "ABC" Output: "ABC"
Example 2
Input: str1 = "ABABAB", str2 = "ABAB" Output: "AB"
Example 3
Input: str1 = "LEET", str2 = "CODE" Output: ""
Constraints
- •
1 <= str1.length, str2.length <= 1000 - •
str1andstr2consist of English uppercase letters.