LENGTH OF LAST WORD

Given a string s consisting of words and spaces, return the length of the last word in the string.

I must write an algorithm with O(log n) runtime complexity.

EXPLANATION CODE:

The lengthOfLastWord method takes a string s as input and returns an integer representing the length of the last word in the string.

The trim() method is called on the input string s to remove any leading or trailing whitespace. This step ensures that any spaces at the beginning or end of the string do not affect the length of the last word.

Subtracting the index of the last space from the total length gives the length of the last word, including any trailing non-alphabetic characters.
Subtracting 1 from the length compensates for the extra space character between the last word and the previous word.

Finally, the method returns the calculated length of the last word in the given string s.

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Contents:
0:00 - Reading
0:48 - Solving
1:26 - Explaining