Package g0501_0600.s0517_super_washing_machines

Class Solution

java.lang.Object
g0501_0600.s0517_super_washing_machines.Solution
public class Solution extends java.lang.Object
517 - Super Washing Machines.

Hard

You have n super washing machines on a line. Initially, each washing machine has some dresses or is empty.

For each move, you could choose any m (1 <= m <= n) washing machines, and pass one dress of each washing machine to one of its adjacent washing machines at the same time.

Given an integer array machines representing the number of dresses in each washing machine from left to right on the line, return the minimum number of moves to make all the washing machines have the same number of dresses. If it is not possible to do it, return -1.

Example 1:

Input: machines = [1,0,5]

Output: 3

Explanation: 1st move: 1 0 <– 5 => 1 1 4 2nd move: 1 <– 1 <– 4 => 2 1 3 3rd move: 2 1 <– 3 => 2 2 2

Example 2:

Input: machines = [0,3,0]

Output: 2

Explanation: 1st move: 0 <– 3 0 => 1 2 0 2nd move: 1 2 –> 0 => 1 1 1

Example 3:

Input: machines = [0,2,0]

Output: -1

Explanation: It’s impossible to make all three washing machines have the same number of dresses.

Constraints:

  • n == machines.length
  • 1 <= n <= 104
  • 0 <= machines[i] <= 105

  • Constructor Summary

    Constructors
    Constructor
    Description
    Solution()
     

  • Method Summary

    Modifier and Type
    Method
    Description
    int
    findMinMoves(int[] machines)
     

    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

    • findMinMoves

      public int findMinMoves(int[] machines)