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Length of Last Word输出最后单词的字母个数

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.

 

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class Solution {public:    int lengthOfLastWord(const char *s) {        if(s==NULL)            return 0;        int len=0;        const char *start = s;        while(*s!=\0){            if(*s== ){                int le=s-start;                if(le!=0)                    len=le;                start=s+1;                s++;            }else                s++;        }        int le=s-start;        if(le!=0)            len=le;        return len;    }};

 

Length of Last Word输出最后单词的字母个数