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
.
public class Solution {
public int lengthOfLastWord(String s) {
int length = 0;
int i;
char[] charArray = s.toCharArray();
i = s.length() - 1;
while (i > -1 && charArray[i] == ' ') {
i--;
}
if (i < 0) {
length = 0;
} else {
for (int index = i; index > -1; index--) {
System.out.println(charArray[index]);
if (charArray[index] != ' ') {
length++;
} else {
break;
}
}
}
return length;
}
}