Given a string s consists of upper/lower-case alphabets and empty space characters '
'
, return the length of last word in the string.
If the last word does not exist, return 0.
Note: A word is defined as a character sequence consists of non-space characters only.
For example,
Given s = "Hello World"
,
return 5
.
class Solution {
public:
int lengthOfLastWord(const char *s) {
int ret = 0;
char *pCur = (char *)s;
char *pBase;
while (*pCur != '\0')
{
pCur++;
}
pCur--;
while (pCur >= s)
{
while (pCur >= s && *pCur == ' ')
pCur--;
if (pCur < s)
break;
pBase = pCur;
while (pCur >=s && *pCur != ' ')
pCur--;
return pBase-pCur;
}
return 0;
}
};