leetcode每日一题——51
private&nbsp;static&nbsp;void&nbsp;addsolution(List<List<String>>&nbsp;res,&nbsp;int[]&nbsp;queen)&nbsp;{
List<String>&nbsp;list&nbsp;=new&nbsp;ArrayList<>();
for&nbsp;(int&nbsp;i&nbsp;=&nbsp;0;&nbsp;i&nbsp;<&nbsp;queen.length;&nbsp;i++)&nbsp;{
StringBuilder&nbsp;sb=new&nbsp;StringBuilder();
for&nbsp;(int&nbsp;j&nbsp;=&nbsp;0;&nbsp;j&nbsp;<&nbsp;queen.length;&nbsp;j++)&nbsp;{
if&nbsp;(queen[i]==j)&nbsp;{
&nbsp;sb.append('Q');
}else&nbsp;{
sb.append('.');
}
}
list.add(sb.toString());
}
res.add(list);
}