Package g1701_1800.s1742_maximum_number_of_balls_in_a_box

Class Solution

  • All Implemented Interfaces:
    
public final class Solution

    1742 - Maximum Number of Balls in a Box\.

    Easy

    You are working in a ball factory where you have n balls numbered from lowLimit up to highLimit inclusive (i.e., n == highLimit - lowLimit + 1), and an infinite number of boxes numbered from 1 to infinity.

    Your job at this factory is to put each ball in the box with a number equal to the sum of digits of the ball's number. For example, the ball number 321 will be put in the box number 3 + 2 + 1 = 6 and the ball number 10 will be put in the box number 1 + 0 = 1.

    Given two integers lowLimit and highLimit, return the number of balls in the box with the most balls.

    Example 1:

    Input: lowLimit = 1, highLimit = 10

    Output: 2

    Explanation:

    Box Number: 1 2 3 4 5 6 7 8 9 10 11 ...

    Ball Count: 2 1 1 1 1 1 1 1 1 0 0 ...

    Box 1 has the most number of balls with 2 balls.

    Example 2:

    Input: lowLimit = 5, highLimit = 15

    Output: 2

    Explanation:

    Box Number: 1 2 3 4 5 6 7 8 9 10 11 ...

    Ball Count: 1 1 1 1 2 2 1 1 1 0 0 ...

    Boxes 5 and 6 have the most number of balls with 2 balls in each.

    Example 3:

    Input: lowLimit = 19, highLimit = 28

    Output: 2

    Explanation:

    Box Number: 1 2 3 4 5 6 7 8 9 10 11 12 ...

    Ball Count: 0 1 1 1 1 1 1 1 1 2 0 0 ...

    Box 10 has the most number of balls with 2 balls.

    Constraints:

    • <code>1 <= lowLimit <= highLimit <= 10<sup>5</sup></code>

    • Nested Class Summary

      Nested Classes 
      Modifier and Type Class Description

    • Field Summary

      Fields 
      Modifier and Type Field Description

    • Constructor Summary

      Constructors 
      Constructor Description
      Solution()

    • Enum Constant Summary

      Enum Constants 
      Enum Constant Description

    • Method Summary

      Modifier and Type Method Description
      final Integer countBalls(Integer lowLimit, Integer highLimit)

      • Methods inherited from class java.lang.Object

        clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait