no such solution, return -1. For example, with A = "abcd" and B = "cdabcdab". Return 3, because by repeating A three times (“abcdabcdabcd”), B is a substring of it; and B is not a substring of A repeated two times ("abcdabcd"). Note: The length of A and B will be between 1 and 10000. Reference: https://leetcode.com/problems/repeated-string-match/description/ """ def repeat_string(A, B): count = 1 tmp = A max_count = (len(B) / l

Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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Given two strings A and B, find the minimum number of times A has to be repeated such that B is a substring of it. If no such solution, return -1.
For example, with A = "abcd" and B = "cdabcdab".
Return 3, because by repeating A three times (“abcdabcdabcd”), B is a substring of it; and B is not a substring of A repeated two times ("abcdabcd").
Note:
The length of A and B will be between 1 and 10000.
Reference: https://leetcode.com/problems/repeated-string-match/description/
"""
def repeat_string(A, B):
    count = 1
    tmp = A
    max_count = (len(B) / len(A)) + 1
    while not(B in tmp):
        tmp = tmp + A
        if (count > max_count):
            count = -1
            break. 

 

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