Leetcode 423. Reconstruct Original Digits from English

1. Description

2. Solution

**解析：**Version 1，找出

0-9

英文字母個數與數字個數的對應關系，然後根據統計的字元數計算對應的數字個數，按順序構造最後的字元串即可。

• Version 1

class Solution:
    def originalDigits(self, s: str) -> str:        
        chars = ["e", "g", "f", "i", "h", "o", "n", "s", "r", "u", "t", "w", "v", "x", "z"]
        stat = {ch: 0 for ch in chars}
        for ch in s:
            stat[ch] += 1

        result = ''
        result += '0' * stat['z']
        result += '1' * (stat['o'] - stat['z'] - stat['w'] - stat['u'])
        result += '2' * stat['w']
        result += '3' * (stat['r'] - stat['z'] - stat['u'])
        result += '4' * stat['u']
        result += '5' * (stat['f'] - stat['u'])
        result += '6' * stat['x']
        result += '7' * (stat['v'] - (stat['f'] - stat['u']))
        result += '8' * stat['g']
        result += '9' * (stat['i'] - (stat['f'] - stat['u']) - stat['x'] - stat['g'])
        return result           

複制

Reference

1. https://leetcode.com/problems/reconstruct-original-digits-from-english/