1736. Latest Time by Replacing Hidden Digits.cpp

// https://leetcode.com/problems/latest-time-by-replacing-hidden-digits/

class Solution
{
public:
    string maximumTime(string time)
    {
        if (time[0] == '?')
            time[0] = ((time[1] == '?') || (time[1] - '0' < 4)) ? '2' : '1';

        if (time[1] == '?')
            time[1] = ((time[0] == '2')) ? '3' : '9';

        if (time[3] == '?')
            time[3] = '5';

        if (time[4] == '?')
            time[4] = '9';

        return time;
    }
};