CCF|火车购票|Java|80分

import java.util.*;

public class Main
{
public static void main(String[] args)
{
Scanner in = new Scanner(System.in);
int n = in.nextInt();
int[][] ints = new int[20][5];

for (int i = 0; i < 20; i++)
{
Arrays.fill(ints[i], 0);
}

int si = 0;
for (int j = 0; j < n; j++)
{
int site = in.nextInt();

for (int i = 0; i < 20; i++)
{

if (si <= 19)
{
if (site <= foundPlace(ints[i]))
{
setPlace(ints[i], i, site);
if (si <= i)
{
si++;
}
break;
}
}
else if (si > 19)
{
if (site <= foundPlace(ints[i]))
{
setPlace(ints[i], i, site);
return;
}
else if (foundPlace(ints[i]) < site)
{
int s = foundPlace(ints[i]);
setPlace(ints[i], i, foundPlace(ints[i]));
site -= s;

}
}
}
}
}

/**
* @param ints
* @return 空位置数目
*/
private static int foundPlace(int[] ints)
{
int s = 0;
for (int i = 4; i >= 0 && ints[i] == 0; i--)
{
s++;
}
return s;
}

/**
* @param ints
* @return
*/
private static void setPlace(int[] ints, int p, int q)
{
int qq = 0;
for (int i = 0; i < 5; i++)
{
if (ints[i] == 0 && qq < q)
{
ints[i] = p * 5 + i + 1;
qq++;

System.out.print(ints[i]);
if (qq != q)
{
System.out.print(" ");
}
else if (qq == q)
{
System.out.println();
}
}
}
}
}