Just contact Python soon, by the simple and powerful python, in doing leetcode,reverse words in a string, just beginning or traditional thinking about how to deal with the space problem has been tested, written very wordy by the Brother Spit Groove said you write code is ugly, Good-hearted stuffed.
Not much nonsense to say directly on the idea code:
Flip string such as: "Hello I am echo", output "echo am I Hello"
You can flip the string two times first to "Ohce ma i Olleh", the flip of each string is "echo am I Hello", of course, you can also flip a single string, in the whole string flipping, the same effect. In this topic Python handles two functions, flipping and fetching strings, where split () takes a single string out of a string to store in a list.
such as: s= "Hello echo", S.split () =[' hello ', ' echo ']
Leetcode Reverse words in a string Python