Let Code Day16 Starting from Zero "344. Reverse String"

Overview

It seems that coding tests are conducted overseas in interviews with engineers, and in many cases, the main thing is to implement specific functions and classes according to the theme.

As a countermeasure, it seems that a site called Let Code will take measures.

A site that trains algorithmic power that can withstand coding tests that are often done in the home.

I think it's better to have the algorithm power of a human being, so I'll solve the problem irregularly and write down the method I thought at that time as a memo.

Leetcode

Leet Code Table of Contents Starting from Zero

Last time Leet Code Day 15 "283. Move Zeroes" starting from zero

Basically, I would like to solve the easy acceptance in descending order.

problem

344. Reverse String

The problem is that the strings in the given array are inverted and returned.

Example 1: Input: ["h","e","l","l","o"] Output: ["o","l","l","e","h"]

Example 2: Input: ["H","a","n","n","a","h"] Output: ["h","a","n","n","a","H"]

solution

I've relied too much on Python's built-in functions, so I've listed some simple ones.

class Solution:
    def reverseString(self, s: List[str]) -> None:
        """
        Do not return anything, modify s in-place instead.
        """
        return s.reverse()
# Runtime: 208 ms, faster than 82.72% of Python3 online submissions for Reverse String.
# Memory Usage: 18.3 MB, less than 5.81% of Python3 online submissions for Reverse String.
class Solution:
    def reverseString(self, s: List[str]) -> None:
        """
        Do not return anything, modify s in-place instead.
        """
        return s[::-1]
class Solution:
    def reverseString(self, s: List[str]) -> None:
        """
        Do not return anything, modify s in-place instead.
        """
        return ''.join(reversed(list(s)))

Python's built-in functions are useful. If there is a better answer, I will add it.

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