g0501_0600.s0517_super_washing_machines

Class Solution

java.lang.Object

g0501_0600.s0517_super_washing_machines.Solution

public class Solution
extends 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 and Description
Solution()

Method Summary

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

Methods inherited from class java.lang.Object

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

Constructor Detail

Solution

public Solution()

Method Detail

findMinMoves

public int findMinMoves(int[] machines)