[抄题]:
Given an array which consists of non-negative integers and an integer m, you can split the array into m non-empty continuous subarrays. Write an algorithm to minimize the largest sum among these m subarrays.
Note:
If n is the length of array, assume the following constraints are satisfied:
- 1 ≤ n ≤ 1000
- 1 ≤ m ≤ min(50, n)
Examples:
Input: nums = [7,2,5,10,8] m = 2 Output: 18 Explanation: There are four ways to split nums into two subarrays. The best way is to split it into [7,2,5] and [10,8], where the largest sum among the two subarrays is only 18.
[暴力解法]:
时间分析:
空间分析:
[优化后]:
时间分析:
空间分析:
[奇葩输出条件]:
[奇葩corner case]:
[思维问题]:
p.p1 { margin: 0.0px 0.0px 0.0px 0.0px; line-height: 22.0px; font: 15.0px "Helvetica Neue" }
不知道干嘛用二分法:二分法可以通过mid的移动 找一个位置
[英文数据结构或算法,为什么不用别的数据结构或算法]:
[一句话思路]:
想不到:最大的数肯定要分隔开,就看能往左划几个数和它一组
[7,2,5,10,8,105550] 3 返回105550
分组不超过m就往左扩展 否则往右
[输入量]:空: 正常情况:特大:特小:程序里处理到的特殊情况:异常情况(不合法不合理的输入):
[画图]:
[一刷]:
[二刷]:
[三刷]:
[四刷]:
[五刷]:
[五分钟肉眼debug的结果]:
[总结]:
多试试几个case 自然就明白了
[复杂度]:Time complexity: O() Space complexity: O()
[算法思想:递归/分治/贪心]:
[关键模板化代码]:
[其他解法]:
[Follow Up]:
[LC给出的题目变变变]:
[代码风格] :
[是否头一次写此类driver funcion的代码] :
原文地址:https://www.cnblogs.com/immiao0319/p/9097881.html