58. 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.
我的代码:
public class Solution {
public int lengthOfLastWord(String s) {
if(s==" ") return 0;
String[] arr = s.split(" ");
return arr[arr.length-1].length();
}
}别人家的代码:
public class Solution {
public int lengthOfLastWord(String s) {
String[] parts = s.split(" ");
if (parts.length == 0) return 0;
return parts[parts.length - 1].length();
}
}当我的代码在测试 “ ”时,报错:
Line 5: java.lang.ArrayIndexOutOfBoundsException: -1
//然而实际上代码是没有问题的,(Ps:还是有问题)
区别在于,“”和“ ”是不一样的!
真是~~~~空格懵逼~~~~
本文通过一个具体例子探讨了如何处理字符串中的空白字符以准确获取最后一个单词的长度。对比两种不同的实现方式,强调了正确处理特殊情况的重要性。
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