递归算法求部门以及其上属部门的人数有关问题
日期：2014-05-17 浏览次数：20972 次
递归算法求部门以及其下属部门的人数问题
下面这个写法得到的结果不正确，各位帮忙看看，谢谢
------解决方案--------------------
countStaffNum 提升为全局变量
下面这个写法得到的结果不正确，各位帮忙看看，谢谢
- C# code
public static int GetStaffNumByUpLeaderId(int UpleaderId, int parentDeptId)
{
int countStaffNum = 0;
StringBuilder strSql1 = new StringBuilder();
if (UpleaderId > 0)
{
strSql1.Append("select deptId,parentDeptId,deptUpLeaderId FROM Department");
strSql1.Append(" where parentDeptId=" + parentDeptId);
strSql1.Append(" and deptUpLeaderId=" + UpleaderId);
}
else
{
strSql1.Append("select deptId FROM Department");
strSql1.Append(" where parentDeptId=" + parentDeptId);
}
DataTable dt1 = DbHelperSQL.Query(strSql1.ToString()).Tables[0];
if (dt1.Rows.Count>0)
{
for (int i = 0; i < dt1.Rows.Count; i++)
{
StringBuilder strSql2 = new StringBuilder();
strSql2.Append("select count(userId) FROM UserInfo");
strSql2.AppendLine(" where deptId=" + int.Parse(dt1.Rows[i]["deptId"].ToString()));
object objDeptStaffNum = DbHelperSQL.GetSingle(strSql2.ToString());
countStaffNum += int.Parse(objDeptStaffNum.ToString());
countStaffNum += GetStaffCountByUpLeaderId(int.Parse(dt1.Rows[i]["deptId"].ToString()), 0);//统计下级部门员工(递归)
}
}
return countStaffNum;
}
------解决方案--------------------
countStaffNum 提升为全局变量
- C# code
int countStaffNum = 0;
public static int GetStaffNumByUpLeaderId(int UpleaderId, int parentDeptId)
{
StringBuilder strSql1 = new StringBuilder();
if (UpleaderId > 0)
{
strSql1.Append("select deptId,parentDeptId,deptUpLeaderId FROM Department");
strSql1.Append(" where parentDeptId=" + parentDeptId);
strSql1.Append(" and deptUpLeaderId=" + UpleaderId);
}
else
{
strSql1.Append("select deptId FROM Department");
strSql1.Append(" where parentDeptId=" + parentDeptId);
}
DataTable dt1 = DbHelperSQL.Query(strSql1.ToString()).Tables[0];
if (dt1.Rows.Count>0)
{
for (int i = 0; i < dt1.Rows.Count; i++)
{
StringBuilder strSql2 = new StringBuilder();
strSql2.Append("select count(userId) FROM UserInfo");
strSql2.AppendLine(" where deptId=" + int.Parse(dt1.Rows[i]["deptId"].ToString()));
object objDeptStaffNum = DbHelperSQL.GetSingle(strSql2.ToString());
countStaffNum += int.Parse(objDeptStaffNum.ToString());
countStaffNum += GetStaffCountByUpLeaderId(int.Parse(dt1.Rows[i]["deptId"].ToString()), 0);//统计下级部门员工(递归)
}
}
return countStaffNum;
}
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