LeetCode 1742: Maximum Number of Balls in a Box Solution
Master LeetCode problem 1742 (Maximum Number of Balls in a Box), 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.
1742. Maximum Number of Balls in a Box
Problem Explanation
Explanation
To solve this problem, we need to count the number of balls that would go into each box based on the sum of the digits of the ball numbers in the given range [lowLimit, highLimit]. We can iterate through each ball number, compute the sum of its digits, and increment the count for the corresponding box. Finally, we find the box with the maximum number of balls.
- Initialize a HashMap to store the count of balls in each box.
- Iterate through each ball number in the range [lowLimit, highLimit].
- For each ball number, compute the sum of its digits.
- Increment the count for the corresponding box in the HashMap.
- Find the box with the maximum number of balls.
- Return the count of balls in the box with the maximum count.
Time Complexity: O(n * log(highLimit)) where n is the number of balls and log(highLimit) is the maximum number of digits in any ball number. Space Complexity: O(n) for the HashMap to store the count of balls in each box.
Solution Code
class Solution {
public int countBalls(int lowLimit, int highLimit) {
Map<Integer, Integer> boxCount = new HashMap<>();
int maxCount = 0;
for (int i = lowLimit; i <= highLimit; i++) {
int sum = 0;
int num = i;
while (num > 0) {
sum += num % 10;
num /= 10;
}
boxCount.put(sum, boxCount.getOrDefault(sum, 0) + 1);
maxCount = Math.max(maxCount, boxCount.get(sum));
}
return maxCount;
}
}Try It Yourself
Loading code editor...
Related LeetCode Problems
Frequently Asked Questions
How to solve LeetCode 1742 (Maximum Number of Balls in a Box)?
This page provides optimized solutions for LeetCode problem 1742 (Maximum Number of Balls in a Box) in Java, C++, and Python, along with a detailed explanation and an interactive code editor to test your code.
What is the time complexity of LeetCode 1742 (Maximum Number of Balls in a Box)?
The time complexity for LeetCode 1742 (Maximum Number of Balls in a Box) varies by solution. Check the detailed explanation section for specific complexities in Java, C++, and Python implementations.
Can I run code for LeetCode 1742 on DevExCode?
Yes, DevExCode provides an interactive code editor where you can write, test, and run your code for LeetCode 1742 in Java, C++, or Python.