AcWing每日一题--拼写正确

https://www.acwing.com/problem/content/1479/

水题。

得到sum后可每一次提取个位数字，或直接将其to_string。

解法一：

#include<iostream>
#include<algorithm>
using namespace std;
string v[]={"zero","one","two","three","four","five","six","seven","eight","nine"};
int main(void){
    string s;
    cin>>s;
    int sum=0;
    for(int i=0;i<s.size();i++){
        sum+=s[i]-'0';
    }
    vector<string> res;
    if(sum==0){
        res.push_back(v[0]);
    }
    while(sum){
        res.push_back(v[sum%10]);
        sum/=10;
    }
    reverse(res.begin(),res.end());
    for(int i=0;i<res.size();i++){
        cout<<res[i]<<" ";
    }
    return 0;
}

解法二：

#include<iostream>
#include<algorithm>
using namespace std;
string v[]={"zero","one","two","three","four","five","six","seven","eight","nine"};
int main(void){
    string s;
    cin>>s;
    int sum=0;
    for(int i=0;i<s.size();i++){
        sum+=s[i]-'0';
    }
    string n=to_string(sum);
    for(auto x:n){
        cout<<v[x-'0']<<" ";
    }
    return 0;
}