Largest palindrome product
A palindromic number reads the same both ways. The largest palindrome made from the product of two 2-digit numbers is 9009 = 91 × 99.
Find the largest palindrome made from the product of two 3-digit numbers.
译文:
得到两个3位数字的乘积的最大回文。
import java.util.ArrayList;
import java.util.List;
public class Main
{
public static void main(String[] args)
{
List<Integer> list = new ArrayList<Integer>();
int a=0;
for(int i=99;i<1000;i++)
{
for(int j=99;j<1000;j++)
{
list.add(j*i);
}
}
List<Integer> lis = new ArrayList<Integer>();
for(int i=0;i<list.size();i++)
{
if(list.get(i)>100000)
{
if(list.get(i) % 10 ==list.get(i) / 100000 && (list.get(i) /10)% 10 ==(list.get(i) / 10000)%10 && (list.get(i) / 1000)%10 ==(list.get(i) / 100)%10)
{
lis.add(list.get(i));
}
}
}
int max=lis.get(0);
for(int i=0;i<lis.size();i++)
{
if(max<lis.get(i))
{
max=lis.get(i);
}
}
System.out.println(max);
}
}
结果:
906609
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