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LeetCode --- 1071. Great common divisor of strings problem solving Report
2022-07-05 02:24:00 【Yang Xin newlfe】
For two strings s
and t
, we say "t
divides s
" if and only if s = t + ... + t
(i.e., t
is concatenated with itself one or more times).
Given two strings str1
and str2
, return the largest string x
such that x
divides both str1
and str2
.
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:</
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