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分類:[C#]
using System;
class CrazyBot
{
double[] prob = new double[4];
bool[,] grid = new bool[100,100];
int[] mx = new int[4]{1,-1,0,0};
int[] my = new int[4] {0,0,1,-1};
public double getprobability(int n, int west,int east,
int north, int south)
{
prob[0] = east / 100;
prob[1] = west / 100;
prob[2] = north / 100;
prob[3] = south / 100;
return dfs(50, 50, n);
}
public double dfs(int x, int y, int n)
{
if (n == 0) return 1;
if (grid[x, y]) return 0;
double ret = 0;
grid[x, y] = true;
for (int i = 0; i < 4; i++)
{
ret += dfs(x + mx[i], y + my[i], n - 1) * prob[i];
}
grid[x, y] = false;
return ret;
}
}
class DO
{
public static void Main()
{
CrazyBot cb = new CrazyBot();
Console.WriteLine("" + cb.getprobability(10, 25, 25, 25, 25));
}
}
上のようなコードをかいて試しに値を代入してみたのですが結果が０になってしまいます。
何故そうなるのか教えてください
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