simple and easy answer 
IntuitionApproachComplexity
Time complexity:

Space complexity:
Code
# Intuition
<!-- Describe your first thoughts on how to solve this problem. -->

# Approach
<!-- Describe your approach to solving the problem. -->

# Complexity
- Time complexity:
<!-- Add your time complexity here, e.g. $$O(n)$$ -->

- Space complexity:
<!-- Add your space complexity here, e.g. $$O(n)$$ -->

# Code
```python3 []
class Solution:
    def hasSameDigits(self, s: str) -> bool:
        while len(s)!=2:
            ans=''
            for i in range(len(s)-1):
                ans+=str((int(s[i])+int(s[i+1]))%10)
            s=ans
        return True if s[0]==s[1] else False

            
        
```
['Python3']