题目: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
.
太简单了直接贴吧:
class Solution {
public:
int lengthOfLastWord(string s) {
if(s == "") return 0;
int last = 0;
int i = 0;
for(i; i < s.size()-1; ++i){
if(s[i] == ' ' && s[i+1] != ' '){
last = 0;
}
else if(s[i] != ' '){
++last;
}
}
if(s[s.size()-1] != ' '){
last++;
}
return last;
}
};