LeetCode 453. Minimum Moves to Equal Array Elements
题目描述:
Given a non-empty integer array of size n, find the minimum number of moves required to make all array elements equal, where a move is incrementing n - 1 elements by 1.
Example:
Input: [1,2,3] Output: 3 Explanation: Only three moves are needed (remember each move increments two elements): [1,2,3] => [2,3,3] => [3,4,3] => [4,4,4]
有很多种move的策略, 可以任意选择一种. 我的办法是:
- 找到当前的最小值与最大值
- 增加除了该最大值以外的其他元素, 直到最小值与最大值相等
- 如果没有全部相等则回到第一步, 否则结束
这样的话总的move次数应该为每个元素与最小元素之差的和.
class Solution {
public:
int minMoves(vector<int>& nums) {
int ans = 0, nMin = INT_MAX;
for(auto i : nums){
nMin = min(nMin, i);
}
for(auto i : nums){
ans += (i - nMin);
}
return ans;
}
};
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