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
.
刚开始从后往前找各种考虑corner condition... 从前往后找最方便。。。
class Solution {
public:
int lengthOfLastWord(const char *s) {
int len=0;
while(*s){
if (*s++!=' ')
len++;
else if (*s && *s!=' ')
len=0;
}
return len;
}
};