90分 测试点8没过 求

P1307 [NOIP2011 普及组] 数字反转

见贤思琦 @ 2019-10-02 09:32:59

#include<bits/stdc++.h>
using namespace std;
int main()
{
    string s1;
    cin>>s1;
    int flag=1;
    if(s1[0]=='-')
    {
        cout<<s1[0];
        reverse(s1.begin(),s1.end());
        for(int i=1;i<s1.length();i++)
        if((!flag||s1[i]!='0')&&s1[i]!='-')
            {
                cout<<s1[i];
                flag=0;
            }
    }
    else
    {
        reverse(s1.begin(),s1.end());
        for(int i=0;i<s1.length();i++)
            if(!flag||s1[i]!='0')
            {
                cout<<s1[i];
                flag=0;
            }
    }
}

by tidongCrazy @ 2019-10-02 09:42:40

@见贤思琦 你输入-1看一下会输出什么

by tidongCrazy @ 2019-10-02 09:44:25

把

 for(int i=1;i<s1.length();i++)
        if((!flag||s1[i]!='0')&&s1[i]!='-')
            {
                cout<<s1[i];
                flag=0;
            }

中改为


for(int i=0;i<s1.length();i++)

by PtrZ @ 2019-10-02 09:49:22

include <iostream>

using namespace std;

int n,k;

int main()

{

cin>>n;
while(n)
{
    k=k*10+n%10;
    n/=10;
}
cout<<k<<endl;

}

by tidongCrazy @ 2019-10-02 09:57:09

@jishengbin 请别用Markdown来强调头文件的重要性（滑稽）

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