标题翻译
I have to calculate LENGTH OF LAST WORD in a string.Getting error
问题
我遇到了“String Index Out Of Range”的运行时错误。我需要计算字符串中最后一个单词的长度。
class Solution{public int lengthOfLastWord(String s){if(s==null || s.isEmpty()){return 0;}int count=0;int len=s.length();s=s.trim();for(int i=len-1;i>=0;i--){if(s.charAt(i)==' '){break;}count++;}return count;}}
英文翻译
I am getting runtime error "String Index Out Of Range".I have to calculate length of last word in a string.
class Solution{public int lengthOfLastWord(String s){if(s==null || s.isEmpty()){return 0;}int count=0;int len=s.length();s=s.trim();for(int i=len-1;i>=0;i--){if(s.charAt(i)==' '){break;}count++;}return count;}}
答案1
得分: 2
你计算长度，然后可能通过修剪来缩短字符串，使实际长度比 len 小。
int len = s.length();s = s.trim();
颠倒这些操作的顺序。
英文翻译
You calculate the length and then potentially shorten the string by trimming it, making the actual length shorter than len.
int len = s.length();s = s.trim();
Reverse the order of those operations.
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