Given an array of non-empty integers of length n , find the minimum number of moves that allow all elements of the array to be equal. Each move can increase the n -1 elements by 1.
Example:
input: [1,2,3] Output: 3 Explanation: Only 3 moves are required (note that each move increases the value of two elements): [1,2,3] [2,3,3] = = [3,4,3] = [4,4,4]
Self-reflection:
Observe the law, the number of moves is the maximum value in the array minus the minimum value, and then the new array to continue to use the maximum value minus the minimum value until the difference is 0, each time the difference is the number of moves
The code is implemented as follows
1 Importjava.io.IOException;2 ImportJava.util.Scanner;3 4 5 Public classMainClass {6 Public Static voidMain (string[] args)throwsioexception{7Scanner input =NewScanner (system.in);8System.out.println ("Please enter an array, separated by commas between elements:"));9 int[] nums=StringToArray (Input.nextline ());TenSolution getmoves=Newsolution (); One intmoves=getmoves.minmoves (nums); ASYSTEM.OUT.PRINTLN ("Minimum number of moves:"); - System.out.println (moves); - } the Public Static int[] StringToArray (String str) { -String[] strarr= str.split (","); - int[] arr=New int[strarr.length]; - for(inti=0;i<strarr.length;i++){ +arr[i]=Integer.parseint (Strarr[i].trim ()); - } + returnarr; A } at } - - classSolution { - Public intMinmoves (int[] nums) { - intMinmoves=move (nums,0); - in returnminmoves; - } to + Public int[] Submaxmin (int[] nums) { - intMax=0,min=0; the for(inti=1;i<nums.length;i++){ * if(nums[max]<Nums[i]) { $max=i;Panax Notoginseng } - if(nums[min]>Nums[i]) { themin=i; + } A } the int[] maxandmin={max,min}; + returnmaxandmin; - } $ $ Public intMoveint[] Nums,intsummove) { - int[] maxandmin=submaxmin (nums); - intMoves=nums[maxandmin[0]]-nums[maxandmin[1]]; the if(moves!=0){ -summove+=moves;Wuyi for(inti=0;i<nums.length;i++){ the if(i!=maxandmin[0]){ -nums[i]+=moves; Wu } - } About returnMove (nums,summove); $}Else{ - returnSummove; - } - } A}
This implementation after Leetcode submitted, because time-out, was rejected, although in Myeclipes can be run quickly, but online debugging shows that the time is very high, [A. "] takes time around 120ms.
Baidu found: The core of this algorithm is the number of moves is the array of other elements minus the minimum value and so ....
1 classSolution {2 Public intMinmoves (int[] nums) {3 intSum=0,moves,min=nums[0];4 for(inti=0;i<nums.length;i++){5sum+=Nums[i];6 if(nums[i]<min) {7min=Nums[i];8 }9 }Tenmoves=sum-min*nums.length; One returnmoves; A } -}
How many slap do you smoke?!!
leetcode#453 the minimum number of moves to make an array element equal