Given a positive integer n, break it into the sum of at least two positive integers and maximize the product of those integers. Return the maximum product you can get.
For example, given n = 2, return 1 (2 = 1 + 1); given n = 10, return 36 (10 = 3 + 3 + 4).
Note: You may assume that n is not less than 2 and not larger than 58.
public class Solution {
public int integerBreak(int n) {
int res[]=new int[7];
res[0]=0;res[1]=1;res[2]=1;res[3]=2;res[4]=4;res[5]=6;res[6]=9;
if(n<=6) return res[n];
int[] pos=new int[n+1];
System.arraycopy(res,0,pos,0,7);
for(int i=7;i<=n;i++){
pos[i]=3*pos[i-3];
}
return pos[n];
}
}
本文介绍了一个算法问题:如何将一个正整数拆分成至少两个正整数之和,并最大化这些整数的乘积。通过示例说明了当输入为2时返回1(2=1+1),当输入为10时返回36(10=3+3+4)。文章提供了一种解决方案,使用数组存储中间结果来避免重复计算。
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