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423. Reconstruct Original Digits from English

Description

Given a string s containing an out-of-order English representation of digits 0-9, return the digits in ascending order.

 

Example 1:

Input: s = "owoztneoer"
Output: "012"

Example 2:

Input: s = "fviefuro"
Output: "45"

 

Constraints:

  • 1 <= s.length <= 105
  • s[i] is one of the characters ["e","g","f","i","h","o","n","s","r","u","t","w","v","x","z"].
  • s is guaranteed to be valid.

Solutions

Solution 1

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class Solution:
    def originalDigits(self, s: str) -> str:
        counter = Counter(s)
        cnt = [0] * 10

        cnt[0] = counter['z']
        cnt[2] = counter['w']
        cnt[4] = counter['u']
        cnt[6] = counter['x']
        cnt[8] = counter['g']

        cnt[3] = counter['h'] - cnt[8]
        cnt[5] = counter['f'] - cnt[4]
        cnt[7] = counter['s'] - cnt[6]

        cnt[1] = counter['o'] - cnt[0] - cnt[2] - cnt[4]
        cnt[9] = counter['i'] - cnt[5] - cnt[6] - cnt[8]

        return ''.join(cnt[i] * str(i) for i in range(10))
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class Solution {
    public String originalDigits(String s) {
        int[] counter = new int[26];
        for (char c : s.toCharArray()) {
            ++counter[c - 'a'];
        }
        int[] cnt = new int[10];
        cnt[0] = counter['z' - 'a'];
        cnt[2] = counter['w' - 'a'];
        cnt[4] = counter['u' - 'a'];
        cnt[6] = counter['x' - 'a'];
        cnt[8] = counter['g' - 'a'];

        cnt[3] = counter['h' - 'a'] - cnt[8];
        cnt[5] = counter['f' - 'a'] - cnt[4];
        cnt[7] = counter['s' - 'a'] - cnt[6];

        cnt[1] = counter['o' - 'a'] - cnt[0] - cnt[2] - cnt[4];
        cnt[9] = counter['i' - 'a'] - cnt[5] - cnt[6] - cnt[8];

        StringBuilder sb = new StringBuilder();
        for (int i = 0; i < 10; ++i) {
            for (int j = 0; j < cnt[i]; ++j) {
                sb.append(i);
            }
        }
        return sb.toString();
    }
}
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class Solution {
public:
    string originalDigits(string s) {
        vector<int> counter(26);
        for (char c : s) ++counter[c - 'a'];
        vector<int> cnt(10);
        cnt[0] = counter['z' - 'a'];
        cnt[2] = counter['w' - 'a'];
        cnt[4] = counter['u' - 'a'];
        cnt[6] = counter['x' - 'a'];
        cnt[8] = counter['g' - 'a'];

        cnt[3] = counter['h' - 'a'] - cnt[8];
        cnt[5] = counter['f' - 'a'] - cnt[4];
        cnt[7] = counter['s' - 'a'] - cnt[6];

        cnt[1] = counter['o' - 'a'] - cnt[0] - cnt[2] - cnt[4];
        cnt[9] = count