[LeeCode]Length of Last Word
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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.
求一字符串中最后一个单词中的长度,很简单,只要注意不要访问越界就哦啦~贴代码:
class Solution {public: int lengthOfLastWord(const char *s) { int len = strlen(s); if (!len) return 0; int i = len - 1; while (i>=0&&s[i] == ' '){ i--; } int count = 0; while (i>=0&&s[i] != ' '){ count++; i--; } return count; }};
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