LeetCode 1736: Latest Time by Replacing Hidden Digits Solution
Master LeetCode problem 1736 (Latest Time by Replacing Hidden Digits), a easy challenge, with our optimized solutions in Java, C++, and Python. Explore detailed explanations, test your code in our interactive editor, and prepare for coding interviews.
Problem Explanation
Explanation:
To solve this problem, we can iterate through the given time string character by character. For each character, we check if it is a question mark ('?'). If it is a question mark, we replace it with the corresponding maximum possible digit based on its position (for hour or minute). If it is a digit, we keep it as is. Finally, we return the modified time string.
Time Complexity:
The time complexity of this solution is O(1) since we are iterating through a fixed-size input string.
Space Complexity:
The space complexity of this solution is O(1) as we are using a constant amount of extra space.
:
Solution Code
class Solution {
public String maximumTime(String time) {
char[] timeArray = time.toCharArray();
if (timeArray[0] == '?') {
timeArray[0] = (timeArray[1] <= '3' || timeArray[1] == '?') ? '2' : '1';
}
if (timeArray[1] == '?') {
timeArray[1] = (timeArray[0] == '2') ? '3' : '9';
}
if (timeArray[3] == '?') {
timeArray[3] = '5';
}
if (timeArray[4] == '?') {
timeArray[4] = '9';
}
return new String(timeArray);
}
}Try It Yourself
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