**：
using system;
using system.collections.generic;
using system.text;
namespace eightqueen
static int n=8;
static char[,] board = new char[n, n];
private static int hasplacedqueen(int locx, int locy, int queennum)
}if (result > 0)
return 1;
else
}else
return 0;
}private static bool canplacequeen(int locx, int locy)
上方for (j = locy - 1; j >= 0; j--)}下方
for (j = locy + 1; j < n; j++)}左方
for (i = locx - 1; i >= 0; i--)}右邊
for (i = locx + 1; i < n; i++)
}左上方
i=locx-1;
j = locy - 1;
while (i >= 0 && j >= 0)
}右上方
i = locx + 1;
j = locy - 1;
while (i < n && j >= 0)
}左下方
i = locx - 1;
j = locy + 1;
while (i >= 0 && j < n)
i = locx + 1;
j = locy + 1;
while (i < n && j < n)
}return true;
}private static void initboard(char [,] board)}}
private static void printboard()
console.writeline();
for (int i = 0; i < n; i++)
console.writeline();
for (int i = 0; i < n; i++)
-|", board[i, j]);
}console.writeline();
//console.write("+");
//for (int k = 0; k < n; k++)
////console.writeline();}}
}}//非遞迴
using system;
using system.collections.generic;
using system.text;
namespace eightqueen
}static void main(string args)
private static void tryplacequeen()
else
nextpair = getnext(current); }}
while (queenstack.count > 0)
private static pair getnext(pair current)
else
return target;
}private static pair getnextline(pair current)
private static int hasplacedqueen(int locx, int locy, int queennum)
}if (result > 0)
return 1;
else
}else
return 0;
}private static bool canplacequeen(int locx, int locy)
上方for (j = locy - 1; j >= 0; j--)}下方
for (j = locy + 1; j < n; j++)}左方
for (i = locx - 1; i >= 0; i--)}右邊
for (i = locx + 1; i < n; i++)
}左上方
i=locx-1;
j = locy - 1;
while (i >= 0 && j >= 0)
}右上方
i = locx + 1;
j = locy - 1;
while (i < n && j >= 0)
}左下方
i = locx - 1;
j = locy + 1;
while (i >= 0 && j < n)
右下i = locx + 1;
j = locy + 1;
while (i < n && j < n)
}return true;
}private static void initboard(char [,] board)}}
private static void printboard()
console.writeline();
for (int i = 0; i < n; i++)
console.writeline();
for (int i = 0; i < n; i++)
-|", board[i, j]);
}console.writeline();}}
}}
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