2496_maximum_value_of_a_string_in_an_array.cpp

//The value of an alphanumeric string can be defined as:

//    The numeric representation of the string in base 10, if it comprises of digits only.
//    The length of the string, otherwise.

//Given an array strs of alphanumeric strings, return the maximum value of any string in strs.

//Example 1:

//Input: strs = ["alic3","bob","3","4","00000"]
//Output: 5
//Explanation: 
//- "alic3" consists of both letters and digits, so its value is its length, i.e. 5.
//- "bob" consists only of letters, so its value is also its length, i.e. 3.
//- "3" consists only of digits, so its value is its numeric equivalent, i.e. 3.
//- "4" also consists only of digits, so its value is 4.
//- "00000" consists only of digits, so its value is 0.
//Hence, the maximum value is 5, of "alic3".

//Example 2:

//Input: strs = ["1","01","001","0001"]
//Output: 1
//Explanation: 
//Each string in the array has value 1. Hence, we return 1.

class Solution {
public:
    int maximumValue(vector<string>& strs) {
        int maxValue = 0;

        for (string str : strs) {
            int value = calculateValue(str);
            maxValue = max(maxValue, value);
        }

        return maxValue;
    }

private:
    int calculateValue(const string &str) {
        int value = 0;
        bool containsDigits = false;
    
        for (char c : str) {
            if (isdigit(c)) {
                value = value * 10 + (c - '0');
                containsDigits = true;
            } else {
                return str.length();
            }
        }
        
        return containsDigits ? value : str.length();
    }
};