Package g1901_2000.s1953_maximum_number_of_weeks_for_which_you_can_work

Class Solution

  • All Implemented Interfaces:
    
public final class Solution

    1953 - Maximum Number of Weeks for Which You Can Work\.

    Medium

    There are n projects numbered from 0 to n - 1. You are given an integer array milestones where each milestones[i] denotes the number of milestones the <code>i<sup>th</sup></code> project has.

    You can work on the projects following these two rules:

    • Every week, you will finish exactly one milestone of one project. You must work every week.

    • You cannot work on two milestones from the same project for two consecutive weeks.

    Once all the milestones of all the projects are finished, or if the only milestones that you can work on will cause you to violate the above rules, you will stop working. Note that you may not be able to finish every project's milestones due to these constraints.

    Return the maximum number of weeks you would be able to work on the projects without violating the rules mentioned above.

    Example 1:

    Input: milestones = 1,2,3

    Output: 6

    Explanation: One possible scenario is:

    • During the 1<sup>st</sup> week, you will work on a milestone of project 0.

    • During the 2<sup>nd</sup> week, you will work on a milestone of project 2.

    • During the 3<sup>rd</sup> week, you will work on a milestone of project 1.

    • During the 4<sup>th</sup> week, you will work on a milestone of project 2.

    • During the 5<sup>th</sup> week, you will work on a milestone of project 1.

    • During the 6<sup>th</sup> week, you will work on a milestone of project 2.

    The total number of weeks is 6.

    Example 2:

    Input: milestones = 5,2,1

    Output: 7

    Explanation: One possible scenario is:

    • During the 1<sup>st</sup> week, you will work on a milestone of project 0.

    • During the 2<sup>nd</sup> week, you will work on a milestone of project 1.

    • During the 3<sup>rd</sup> week, you will work on a milestone of project 0.

    • During the 4<sup>th</sup> week, you will work on a milestone of project 1.

    • During the 5<sup>th</sup> week, you will work on a milestone of project 0.

    • During the 6<sup>th</sup> week, you will work on a milestone of project 2.

    • During the 7<sup>th</sup> week, you will work on a milestone of project 0.

    The total number of weeks is 7. Note that you cannot work on the last milestone of project 0 on 8<sup>th</sup> week because it would violate the rules. Thus, one milestone in project 0 will remain unfinished.

    Constraints:

    • n == milestones.length

    • <code>1 <= n <= 10<sup>5</sup></code>

    • <code>1 <= milestonesi<= 10<sup>9</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 Long numberOfWeeks(IntArray milestones)

      • Methods inherited from class java.lang.Object

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