代码清单3-11
struct NODE
{
NODE* pLeft;
NODE* pRight;
int nMaxLeft;
int nMaxRight;
char chValue;
};
int nMaxLen = 0;
void FindMaxLen(NODE* pRoot)
{
if(pRoot == NULL)
{
return;
}
if(pRoot -> pLeft == NULL)
{
pRoot -> nMaxLeft = 0;
}
if(pRoot -> pRight == NULL)
{
pRoot -> nMaxRight = 0;
}
if(pRoot -> pLeft != NULL)
{
FindMaxLen(pRoot -> pLeft);
}
if(pRoot -> pRight != NULL)
{
FindMaxLen(pRoot -> pRight);
}
if(pRoot -> pLeft != NULL)
{
int nTempMax = 0;
if(pRoot -> pLeft -> nMaxLeft > pRoot -> pLeft -> nMaxRight)
{
nTempMax = pRoot -> pLeft -> nMaxLeft;
}
else
{
nTempMax = pRoot -> pLeft -> nMaxRight;
}
pRoot -> nMaxLeft = nTempMax + 1;
}
if(pRoot -> pRight != NULL)
{
int nTempMax = 0;
if(pRoot -> pRight -> nMaxLeft > pRoot -> pRight -> nMaxRight)
{
nTempMax = pRoot -> pRight -> nMaxLeft;
}
else
{
nTempMax = pRoot -> pRight -> nMaxRight;
}
pRoot -> nMaxRight = nTempMax + 1;
}
if(pRoot -> nMaxLeft + pRoot -> nMaxRight > nMaxLen)
{
nMaxLen = pRoot -> nMaxLeft + pRoot -> nMaxRight;
}
}