Package g1701_1800.s1742_maximum_number_of_balls_in_a_box

Class Solution

java.lang.Object
g1701_1800.s1742_maximum_number_of_balls_in_a_box.Solution
public class Solution extends java.lang.Object
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:

  • 1 <= lowLimit <= highLimit <= 105

  • Constructor Summary

    Constructors
    Constructor
    Description
    Solution()
     

  • Method Summary

    Modifier and Type
    Method
    Description
    int
    countBalls(int lowLimit, int highLimit)
     

    Methods inherited from class java.lang.Object

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

  • Constructor Details

    • Solution

      public Solution()

  • Method Details

    • countBalls

      public int countBalls(int lowLimit, int highLimit)