short and simple
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
```cpp []
class Solution {
public:
    bool hasSameDigits(string s) {
        // int digit1,digit2,sumDigit;
    while(s.length()>2){
        string newString;
        // newString.reserve(s.length()-1);
        
        for(int i=0;i<s.length()-1;i++){
           int digit1=s[i]-'0';
            int digit2=s[i+1]-'0';
            int sumDigit=(digit1+digit2)%10;
                newString.push_back(sumDigit + '0');
      
        }
        s=newString;
    }
        return s[0]==s[1];

        
    }
};
```
['C++']