Program to check the string is repeating string or not in Python

Suppose we have a string, we have to check whether it's a repeating string or not.

So, if the input is like string = "helloworldhelloworld", then the output will be True

To solve this, we will follow these steps −

• n := size of s
• Define a function findFactors() . This will take n
• f := a new set
• i := 1
• while i * i <= n, do
  • if n mod i is same as 0, then
    • insert quotient of (n / i) into f
    • insert i into f
  • i := i + 1
• return f
• From the main method, do the following −
• fact := findFactors(n)
• for each i in fact, do
  • if i is same as n, then
    • go for the next iteration
  • ss := s[from index 0 to i-1]
  • val := occurrences of ss in s
  • if val is same as quotient of (n/i), then
    • return True
• return False

Let us see the following implementation to get better understanding −

Example

class Solution:
   def solve(self, s):
      n = len(s)
      def findFactors(n):
         f = set()
         i = 1
         while(i * i <= n):
            if(n % i == 0):
               f.add(int(n / i))
               f.add(i)
            i+= 1
            return f
         fact = findFactors(n)
         for i in fact:
            if(i == n):
               continue
            ss = s[:i]
            val = s.count(ss)
            if(val == int(n / i)):
               return True
         return False
ob = Solution()
print(ob.solve("helloworldhelloworld"))

Input

"helloworldhelloworld"

Output

True