leetcode[58]:Length of Last Word

Length of Last Word
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.

int lengthOfLastWord(char* s) {    int i;    int len=strlen(s);    while(s[len-1] == ' ') len--;    for(i=len; i>0; i--)        {        if(s[i-1] == ' ')            return len-i;        }    return len;}

简单题目，注意句子末尾的空格去除即可。