标签:http stream tps style size family line bsp 题意
题意:
求以2,3,5为唯一因子的第1500个数字(丑数)
AC代码:
#include<iostream>
using namespace std;
int minu(int a,int b,int c)
{
int temp;
temp=a>b?b:a;
return temp>c?c:temp;
}
int main()
{
int ugly[1505];
ugly[0]=1;
int ugly2=0,ugly3=0,ugly5=0;
for (int i=1;i<1500;i++)
{
int mini=minu(ugly[ugly2]*2,ugly[ugly3]*3,ugly[ugly5]*5);
if (mini==ugly[ugly2]*2)
ugly2++;
if (mini==ugly[ugly3]*3) //不要写成else if,因为有可能最小值与两个值相等
ugly3++;
if (mini==ugly[ugly5]*5) //同上
ugly5++;
ugly[i]=mini;
}
cout << "The 1500‘th ugly number is ";
cout << ugly[1500-1] << "." << endl;
return 0;
}
标签:http stream tps style size family line bsp 题意
原文地址:http://www.cnblogs.com/lisijie/p/7210060.html